20x+90+10x=180

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Solution for 20x+90+10x=180 equation: 



20x+90+10x=180

We move all terms to the left:

20x+90+10x-(180)=0

We add all the numbers together, and all the variables

30x-90=0

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

30x=90

x=90/30

x=3

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