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12.5=5x+3.8
We move all terms to the left:
12.5-(5x+3.8)=0
We get rid of parentheses
-5x-3.8+12.5=0
We add all the numbers together, and all the variables
-5x+8.7=0
We move all terms containing x to the left, all other terms to the right
-5x=-8.7
x=-8.7/-5
x=1+2.1764705882353/2.9411764705882
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