x/2+x+3x=90

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Solution for x/2+x+3x=90 equation: 



x/2+x+3x=90

We move all terms to the left:

x/2+x+3x-(90)=0

We add all the numbers together, and all the variables

4x+x/2-90=0

We multiply all the terms by the denominator


4x*2+x-90*2=0

We add all the numbers together, and all the variables

x+4x*2-180=0

Wy multiply elements

x+8x-180=0

We add all the numbers together, and all the variables

9x-180=0

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

9x=180

x=180/9

x=20

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