-7+3x+8=-678

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Solution for -7+3x+8=-678 equation: 



-7+3x+8=-678

We move all terms to the left:

-7+3x+8-(-678)=0

We add all the numbers together, and all the variables

3x+679=0

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

3x=-679

x=-679/3

x=-226+1/3

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