-x=72+2x

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Solution for -x=72+2x equation: 



-x=72+2x

We move all terms to the left:

-x-(72+2x)=0

We add all the numbers together, and all the variables

-x-(2x+72)=0

We add all the numbers together, and all the variables

-1x-(2x+72)=0

We get rid of parentheses

-1x-2x-72=0

We add all the numbers together, and all the variables

-3x-72=0

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

-3x=72

x=72/-3

x=-24

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