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-42x=-4x-76
We move all terms to the left:
-42x-(-4x-76)=0
We get rid of parentheses
-42x+4x+76=0
We add all the numbers together, and all the variables
-38x+76=0
We move all terms containing x to the left, all other terms to the right
-38x=-76
x=-76/-38
x=+2
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