X+x/2+9=90

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Solution for X+x/2+9=90 equation: 



X+X/2+9=90

We move all terms to the left:

X+X/2+9-(90)=0

We add all the numbers together, and all the variables

X+X/2-81=0

We multiply all the terms by the denominator


X*2+X-81*2=0

We add all the numbers together, and all the variables

X+X*2-162=0

Wy multiply elements

X+2X-162=0

We add all the numbers together, and all the variables

3X-162=0

We move all terms containing X to the left, all other terms to the right

3X=162

X=162/3

X=54

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