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90=28x/2
We move all terms to the left:
90-(28x/2)=0
We add all the numbers together, and all the variables
-(+28x/2)+90=0
We get rid of parentheses
-28x/2+90=0
We multiply all the terms by the denominator
-28x+90*2=0
We add all the numbers together, and all the variables
-28x+180=0
We move all terms containing x to the left, all other terms to the right
-28x=-180
x=-180/-28
x=6+3/7
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