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4(3+x)=18+2
We move all terms to the left:
4(3+x)-(18+2)=0
We add all the numbers together, and all the variables
4(x+3)-20=0
We multiply parentheses
4x+12-20=0
We add all the numbers together, and all the variables
4x-8=0
We move all terms containing x to the left, all other terms to the right
4x=8
x=8/4
x=2
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