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7(2x+4)=4=42
We move all terms to the left:
7(2x+4)-(4)=0
We multiply parentheses
14x+28-4=0
We add all the numbers together, and all the variables
14x+24=0
We move all terms containing x to the left, all other terms to the right
14x=-24
x=-24/14
x=-1+5/7
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