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75=x+.3x
We move all terms to the left:
75-(x+.3x)=0
We add all the numbers together, and all the variables
-(+1.3x)+75=0
We get rid of parentheses
-1.3x+75=0
We move all terms containing x to the left, all other terms to the right
-1.3x=-75
x=-75/-1.3
x=57+0.89999999999999/1.3
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