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4x+4=2(2-1)
We move all terms to the left:
4x+4-(2(2-1))=0
We add all the numbers together, and all the variables
4x+4-(21)=0
We add all the numbers together, and all the variables
4x-17=0
We move all terms containing x to the left, all other terms to the right
4x=17
x=17/4
x=4+1/4
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