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3.75=x+x
We move all terms to the left:
3.75-(x+x)=0
We add all the numbers together, and all the variables
-(+2x)+3.75=0
We get rid of parentheses
-2x+3.75=0
We move all terms containing x to the left, all other terms to the right
-2x=-3.75
x=-3.75/-2
x=1+1/1.1428571428571
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