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18.x+42.7=134.2
We move all terms to the left:
18.x+42.7-(134.2)=0
We add all the numbers together, and all the variables
18.x-91.5=0
We move all terms containing x to the left, all other terms to the right
18.x=91.5
x=91.5/18.
x=5+1/12
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