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5x+42=2x-1
We move all terms to the left:
5x+42-(2x-1)=0
We get rid of parentheses
5x-2x+1+42=0
We add all the numbers together, and all the variables
3x+43=0
We move all terms containing x to the left, all other terms to the right
3x=-43
x=-43/3
x=-14+1/3
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