7x+7=8x+9

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Solution for 7x+7=8x+9 equation: 



7x+7=8x+9

We move all terms to the left:

7x+7-(8x+9)=0

We get rid of parentheses

7x-8x-9+7=0

We add all the numbers together, and all the variables

-1x-2=0

We move all terms containing x to the left, all other terms to the right

-x=2

x=2/-1

x=-2

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