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3=-3(5x+9)
We move all terms to the left:
3-(-3(5x+9))=0
We calculate terms in parentheses: -(-3(5x+9)), so:We get rid of parentheses
-3(5x+9)
We multiply parentheses
-15x-27
Back to the equation:
-(-15x-27)
15x+27+3=0
We add all the numbers together, and all the variables
15x+30=0
We move all terms containing x to the left, all other terms to the right
15x=-30
x=-30/15
x=-2
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