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4(2x+8)=-42+66
We move all terms to the left:
4(2x+8)-(-42+66)=0
We add all the numbers together, and all the variables
4(2x+8)-24=0
We multiply parentheses
8x+32-24=0
We add all the numbers together, and all the variables
8x+8=0
We move all terms containing x to the left, all other terms to the right
8x=-8
x=-8/8
x=-1
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