57=-4x+9

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Solution for 57=-4x+9 equation: 



57=-4x+9

We move all terms to the left:

57-(-4x+9)=0

We get rid of parentheses

4x-9+57=0

We add all the numbers together, and all the variables

4x+48=0

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

4x=-48

x=-48/4

x=-12

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