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120=4(9)(3)+2(3)x
We move all terms to the left:
120-(4(9)(3)+2(3)x)=0
We add all the numbers together, and all the variables
-(23x+493)+120=0
We get rid of parentheses
-23x-493+120=0
We add all the numbers together, and all the variables
-23x-373=0
We move all terms containing x to the left, all other terms to the right
-23x=373
x=373/-23
x=-16+5/23
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