7x+18=-2x+99

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Solution for 7x+18=-2x+99 equation: 



7x+18=-2x+99

We move all terms to the left:

7x+18-(-2x+99)=0

We get rid of parentheses

7x+2x-99+18=0

We add all the numbers together, and all the variables

9x-81=0

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

9x=81

x=81/9

x=9

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