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20-4(x+3)=-2(x-2)
We move all terms to the left:
20-4(x+3)-(-2(x-2))=0
We multiply parentheses
-4x-(-2(x-2))-12+20=0
We calculate terms in parentheses: -(-2(x-2)), so:We add all the numbers together, and all the variables
-2(x-2)
We multiply parentheses
-2x+4
Back to the equation:
-(-2x+4)
-4x-(-2x+4)+8=0
We get rid of parentheses
-4x+2x-4+8=0
We add all the numbers together, and all the variables
-2x+4=0
We move all terms containing x to the left, all other terms to the right
-2x=-4
x=-4/-2
x=+2
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