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57+5x-1=12+7
We move all terms to the left:
57+5x-1-(12+7)=0
We add all the numbers together, and all the variables
5x+57-1-19=0
We add all the numbers together, and all the variables
5x+37=0
We move all terms containing x to the left, all other terms to the right
5x=-37
x=-37/5
x=-7+2/5
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