20x+x+30=90

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Solution for 20x+x+30=90 equation: 



20x+x+30=90

We move all terms to the left:

20x+x+30-(90)=0

We add all the numbers together, and all the variables

21x-60=0

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

21x=60

x=60/21

x=2+6/7

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