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12(x)=30-3.5(x)
We move all terms to the left:
12(x)-(30-3.5(x))=0
We add all the numbers together, and all the variables
12x-(-3.5x+30)=0
We get rid of parentheses
12x+3.5x-30=0
We add all the numbers together, and all the variables
15.5x-30=0
We move all terms containing x to the left, all other terms to the right
15.5x=30
x=30/15.5
x=1+9.6666666666667/10.333333333333
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