90+3x+4x-20=180

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Solution for 90+3x+4x-20=180 equation: 



90+3x+4x-20=180

We move all terms to the left:

90+3x+4x-20-(180)=0

We add all the numbers together, and all the variables

7x-110=0

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

7x=110

x=110/7

x=15+5/7

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