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x+2x+x/3=90
We move all terms to the left:
x+2x+x/3-(90)=0
We add all the numbers together, and all the variables
3x+x/3-90=0
We multiply all the terms by the denominator
3x*3+x-90*3=0
We add all the numbers together, and all the variables
x+3x*3-270=0
Wy multiply elements
x+9x-270=0
We add all the numbers together, and all the variables
10x-270=0
We move all terms containing x to the left, all other terms to the right
10x=270
x=270/10
x=27
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