57=9x+12

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Solution for 57=9x+12 equation: 



57=9x+12

We move all terms to the left:

57-(9x+12)=0

We get rid of parentheses

-9x-12+57=0

We add all the numbers together, and all the variables

-9x+45=0

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

-9x=-45

x=-45/-9

x=+5

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