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14.5+42.1+37.9-x=65.3
We move all terms to the left:
14.5+42.1+37.9-x-(65.3)=0
We add all the numbers together, and all the variables
-1x+29.2=0
We move all terms containing x to the left, all other terms to the right
-x=-29.2
x=-29.2/-1
x=29+0.2/1
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