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3x+20=-4(2x+6)
We move all terms to the left:
3x+20-(-4(2x+6))=0
We calculate terms in parentheses: -(-4(2x+6)), so:We get rid of parentheses
-4(2x+6)
We multiply parentheses
-8x-24
Back to the equation:
-(-8x-24)
3x+8x+24+20=0
We add all the numbers together, and all the variables
11x+44=0
We move all terms containing x to the left, all other terms to the right
11x=-44
x=-44/11
x=-4
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