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x/2+25+2x-10=90
We move all terms to the left:
x/2+25+2x-10-(90)=0
We add all the numbers together, and all the variables
2x+x/2-75=0
We multiply all the terms by the denominator
2x*2+x-75*2=0
We add all the numbers together, and all the variables
x+2x*2-150=0
Wy multiply elements
x+4x-150=0
We add all the numbers together, and all the variables
5x-150=0
We move all terms containing x to the left, all other terms to the right
5x=150
x=150/5
x=30
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