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5(x-4)+3=-42
We move all terms to the left:
5(x-4)+3-(-42)=0
We add all the numbers together, and all the variables
5(x-4)+45=0
We multiply parentheses
5x-20+45=0
We add all the numbers together, and all the variables
5x+25=0
We move all terms containing x to the left, all other terms to the right
5x=-25
x=-25/5
x=-5
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