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0=1.5x+2(x-4)+4.5(x+7)
We move all terms to the left:
0-(1.5x+2(x-4)+4.5(x+7))=0
We add all the numbers together, and all the variables
-(1.5x+2(x-4)+4.5(x+7))=0
We calculate terms in parentheses: -(1.5x+2(x-4)+4.5(x+7)), so:We get rid of parentheses
1.5x+2(x-4)+4.5(x+7)
We multiply parentheses
1.5x+2x+4.5x-8+31.5
We add all the numbers together, and all the variables
8x+23.5
Back to the equation:
-(8x+23.5)
-8x-23.5=0
We move all terms containing x to the left, all other terms to the right
-8x=23.5
x=23.5/-8
x=-2+5/5.33333333333
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