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0.11x+0.2x=18.6
We move all terms to the left:
0.11x+0.2x-(18.6)=0
We add all the numbers together, and all the variables
0.31x-18.6=0
We move all terms containing x to the left, all other terms to the right
0.31x=18.6
x=18.6/0.31
x=60
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