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7(-4+x)=18-3
We move all terms to the left:
7(-4+x)-(18-3)=0
We add all the numbers together, and all the variables
7(x-4)-15=0
We multiply parentheses
7x-28-15=0
We add all the numbers together, and all the variables
7x-43=0
We move all terms containing x to the left, all other terms to the right
7x=43
x=43/7
x=6+1/7
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