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4(x+2)-x=30
We move all terms to the left:
4(x+2)-x-(30)=0
We add all the numbers together, and all the variables
-1x+4(x+2)-30=0
We multiply parentheses
-1x+4x+8-30=0
We add all the numbers together, and all the variables
3x-22=0
We move all terms containing x to the left, all other terms to the right
3x=22
x=22/3
x=7+1/3
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