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45+x+0.5x+2=150
We move all terms to the left:
45+x+0.5x+2-(150)=0
We add all the numbers together, and all the variables
1.5x-103=0
We move all terms containing x to the left, all other terms to the right
1.5x=103
x=103/1.5
x=68+1/1.5
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