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3.5+x=3.5-2x+1.5
We move all terms to the left:
3.5+x-(3.5-2x+1.5)=0
We add all the numbers together, and all the variables
x-(-2x+5)+3.5=0
We get rid of parentheses
x+2x-5+3.5=0
We add all the numbers together, and all the variables
3x-1.5=0
We move all terms containing x to the left, all other terms to the right
3x=1.5
x=1.5/3
x=1/2
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