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0.5x-8.1=3.4
We move all terms to the left:
0.5x-8.1-(3.4)=0
We add all the numbers together, and all the variables
0.5x-11.5=0
We move all terms containing x to the left, all other terms to the right
0.5x=11.5
x=11.5/0.5
x=23
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