Monday, May 3, 2010

Review: Solving One Step Algebra Equations

Apply the opposite operation

Remember
-an opposite operation is an operation that "undoes" another operation.
-subtraction and adding are opposites
-division and multiplication are opposites
-whatever you do one side you must do the same to the other side to maintain balance


1st step
- isolate the variable/get the letter by itself
2nd step- apply opposite operation
3rd step- check the answer, substitute the answer for the letter of the original equation

A+5=7
-5 -5
A=2
Check your answer:
A+5=7
2+5=7
7=7

To extend our knowledge, we had equations to solve:

a) b-3=5
- +3 +3
- b=8
Check your answer:
b-3=5
8-3=5
8=8

b) c÷3=7
- x3 x3
- c=21
Check your answer:
c÷3=7
21÷3=7
21=21

c) 4d=16
- ÷4 ÷4
- d=4
Check your answer:
4d=16
4(4)=16
16=16

Other examples:



















HOMEWORK
: Pg. 405=407 #1-21

21 comments:

  1. Excellent post, I really liked it. But maybe next time use a little more colour. The slide show type thing at the bottom was very helpful. There's nothing else I can say except for... great job. (:

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  2. Good post Julibella. I really liked your pictures. The only thing i wanted to see in your post was alittle more colours. Anyways Excellent job. Keep up the good work. (:

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  3. Nice post Julibella. I liked your pictures, explanation and how you put a video. Next time put more colour because that's what attracts me. Other than that.. good job :)

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  4. Great Job Julibella!, I liked the pictures you posted and also that you put a video to help others if they still don't get the notes..but I think you should add a bit more colours..but other than that GREAT JOB! :D

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  5. Grate post you did a really good job but iam with cathlene try to add more coulor and that i also like all the pictures!!!!!! Grate Job

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  6. Excellent job Julibella! I really liked your post, your pictures were great and I liked how you added an explanation video. I agree with the other commenters, maybe next time you should add a little more colour, but other than that, great job!!(:

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  7. Great job Julibella!!! I liked all the colours you used and I liked how you highlited the nsteps we learned. You explaned all that we learned in class and was easy to follow.

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  8. Good job Julibella, i liked the colors and pictures and how you highlighted the steps we learned. You explained it all very well, good job and keep it up.

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  9. Great job Julibella, the blog post was realy well done and had a lot of information, i like that you posted a video and I realy liked the pictures. Keep up the good work!:)

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  10. Nice Job Juliebella!I liked the colors and pictures,and I like that slide show too:)

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  11. Good job! i liked the pictures. You explained everything very clearly and the slide thingy was very helpful. good job!

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  12. Great Post Julibella ! Great picture too, it helped me alot. I liked how you explained and showed all we did in class that day. Maybe add some colour to it, but other than that, great job!

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  13. Good Job! Everything was explained well and the picture is pretty good. Good Job!

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  14. Good job, Julibella! Everything was included, easy to understand,and neat. I also liked your picture and link. You could have added some color, but other than that, great job!

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  15. WOW jellybean if I neede a tutor(which I do)i'd pick you. Every time you and Kristel do a blog it has always been a WOW and So much, I don't think I could do that. yOU GUYS give out so much
    -sophia
    P.s.
    Thanks for giving me a Wow on my drawing to.

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  16. Opps I forgot good picture.
    -sophia

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  17. really good post i really liked it but maby next time you should add more colours and but, other then that it was great

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  18. Great post.I like how you put all the info on. Maybe add a bit more colour. Good post.

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