9-7x=-8x

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



9-7x=-8x

We move all terms to the left:

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

We get rid of parentheses

-7x+8x+9=0

We add all the numbers together, and all the variables

x+9=0

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

x=-9

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