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0.2(4x+12)=4
We move all terms to the left:
0.2(4x+12)-(4)=0
We multiply parentheses
0.8x+2.4-4=0
We add all the numbers together, and all the variables
0.8x-1.6=0
We move all terms containing x to the left, all other terms to the right
0.8x=1.6
x=1.6/0.8
x=2
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