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4/0.25=x/0.75
We move all terms to the left:
4/0.25-(x/0.75)=0
We add all the numbers together, and all the variables
-(+x/0.75)+4/0.25=0
We add all the numbers together, and all the variables
-(+x/0.75)+16=0
We get rid of parentheses
-x/0.75+16=0
We multiply all the terms by the denominator
-x+16*0.75=0
We add all the numbers together, and all the variables
-1x+12=0
We move all terms containing x to the left, all other terms to the right
-x=-12
x=-12/-1
x=+12
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