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2x+x/2=45
We move all terms to the left:
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
x+2x*2-90=0
Wy multiply elements
x+4x-90=0
We add all the numbers together, and all the variables
5x-90=0
We move all terms containing x to the left, all other terms to the right
5x=90
x=90/5
x=18
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