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5x/2-x=90
We move all terms to the left:
5x/2-x-(90)=0
We add all the numbers together, and all the variables
-1x+5x/2-90=0
We multiply all the terms by the denominator
-1x*2+5x-90*2=0
We add all the numbers together, and all the variables
5x-1x*2-180=0
Wy multiply elements
5x-2x-180=0
We add all the numbers together, and all the variables
3x-180=0
We move all terms containing x to the left, all other terms to the right
3x=180
x=180/3
x=60
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