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8.5x+2.4x=180
We move all terms to the left:
8.5x+2.4x-(180)=0
We add all the numbers together, and all the variables
10.9x-180=0
We move all terms containing x to the left, all other terms to the right
10.9x=180
x=180/10.9
x=16+1/1.9464285714286
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