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12(x-20)=-4(x-22)
We move all terms to the left:
12(x-20)-(-4(x-22))=0
We multiply parentheses
12x-(-4(x-22))-240=0
We calculate terms in parentheses: -(-4(x-22)), so:We get rid of parentheses
-4(x-22)
We multiply parentheses
-4x+88
Back to the equation:
-(-4x+88)
12x+4x-88-240=0
We add all the numbers together, and all the variables
16x-328=0
We move all terms containing x to the left, all other terms to the right
16x=328
x=328/16
x=20+1/2
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