21x+90=180

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Solution for 21x+90=180 equation: 



21x+90=180

We move all terms to the left:

21x+90-(180)=0

We add all the numbers together, and all the variables

21x-90=0

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

21x=90

x=90/21

x=4+2/7

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