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-13+4x=-39+256
We move all terms to the left:
-13+4x-(-39+256)=0
We add all the numbers together, and all the variables
4x-13-217=0
We add all the numbers together, and all the variables
4x-230=0
We move all terms containing x to the left, all other terms to the right
4x=230
x=230/4
x=57+1/2
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