99-x=3x+7

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Solution for 99-x=3x+7 equation: 



99-x=3x+7

We move all terms to the left:

99-x-(3x+7)=0

We add all the numbers together, and all the variables

-1x-(3x+7)+99=0

We get rid of parentheses

-1x-3x-7+99=0

We add all the numbers together, and all the variables

-4x+92=0

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

-4x=-92

x=-92/-4

x=+23

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