Substitution and find plots


label Algebra
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Am I right on this one or close?

x+y=4

y=-3

-3y+y=4

4y=1 

Sep 11th, 2015

Thank you for the opportunity to help you with your question!

ha ha ha!

x+y=4

y=-3

Lets start here

x+ y=4

Replace y with -3

x+(-3)=4

When negatiove 3 crosses the = sign it become +3

x=4+3

x=7


Let me know if you are further confused

Please let me know if you need any clarification. I'm always happy to answer your questions.
Sep 11th, 2015

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Sep 11th, 2015
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