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0.5(x)+1(2x)=180
We move all terms to the left:
0.5(x)+1(2x)-(180)=0
We add all the numbers together, and all the variables
12.5x-180=0
We move all terms containing x to the left, all other terms to the right
12.5x=180
x=180/12.5
x=14+5/12.5
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