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0.5x+1.8-x=3.45
We move all terms to the left:
0.5x+1.8-x-(3.45)=0
We add all the numbers together, and all the variables
-0.5x-1.65=0
We move all terms containing x to the left, all other terms to the right
-0.5x=1.65
x=1.65/-0.5
x=-3+0.15/0.5
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