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12(1.5x+10.50)=2(x+10.50)
We move all terms to the left:
12(1.5x+10.50)-(2(x+10.50))=0
We add all the numbers together, and all the variables
12(1.5x+10.5)-(2(x+10.5))=0
We multiply parentheses
12x-(2(x+10.5))+126=0
We calculate terms in parentheses: -(2(x+10.5)), so:We get rid of parentheses
2(x+10.5)
We multiply parentheses
2x+21
Back to the equation:
-(2x+21)
12x-2x-21+126=0
We add all the numbers together, and all the variables
10x+105=0
We move all terms containing x to the left, all other terms to the right
10x=-105
x=-105/10
x=-10+1/2
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