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-2(x-9)=x+3(x+10)
We move all terms to the left:
-2(x-9)-(x+3(x+10))=0
We multiply parentheses
-2x-(x+3(x+10))+18=0
We calculate terms in parentheses: -(x+3(x+10)), so:We get rid of parentheses
x+3(x+10)
We multiply parentheses
x+3x+30
We add all the numbers together, and all the variables
4x+30
Back to the equation:
-(4x+30)
-2x-4x-30+18=0
We add all the numbers together, and all the variables
-6x-12=0
We move all terms containing x to the left, all other terms to the right
-6x=12
x=12/-6
x=-2
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