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39+0.15x=55.05
We move all terms to the left:
39+0.15x-(55.05)=0
We add all the numbers together, and all the variables
0.15x-16.05=0
We move all terms containing x to the left, all other terms to the right
0.15x=16.05
x=16.05/0.15
x=107
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