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0.42+0.66(120-x)=0.60(120)
We move all terms to the left:
0.42+0.66(120-x)-(0.60(120))=0
We add all the numbers together, and all the variables
0.66(-1x+120)+0.42-(0.6012)=0
We add all the numbers together, and all the variables
0.66(-1x+120)-0.1812=0
We multiply parentheses
-0.66x+79.2-0.1812=0
We add all the numbers together, and all the variables
-0.66x+79.0188=0
We move all terms containing x to the left, all other terms to the right
-0.66x=-79.0188
x=-79.0188/-0.66
x=119+0.47879999999999/0.66
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