9x-42=-2x+57

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Solution for 9x-42=-2x+57 equation: 



9x-42=-2x+57

We move all terms to the left:

9x-42-(-2x+57)=0

We get rid of parentheses

9x+2x-57-42=0

We add all the numbers together, and all the variables

11x-99=0

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

11x=99

x=99/11

x=9

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