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13.88=x+5.3
We move all terms to the left:
13.88-(x+5.3)=0
We get rid of parentheses
-x-5.3+13.88=0
We add all the numbers together, and all the variables
-1x+8.58=0
We move all terms containing x to the left, all other terms to the right
-x=-8.58
x=-8.58/-1
x=8+0.58/1
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