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2x-(x/2)=45
We move all terms to the left:
2x-(x/2)-(45)=0
We add all the numbers together, and all the variables
2x-(+x/2)-45=0
We get rid of parentheses
2x-x/2-45=0
We multiply all the terms by the denominator
2x*2-x-45*2=0
We add all the numbers together, and all the variables
-1x+2x*2-90=0
Wy multiply elements
-1x+4x-90=0
We add all the numbers together, and all the variables
3x-90=0
We move all terms containing x to the left, all other terms to the right
3x=90
x=90/3
x=30
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