21x-9+27+90=360

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Solution for 21x-9+27+90=360 equation: 



21x-9+27+90=360

We move all terms to the left:

21x-9+27+90-(360)=0

We add all the numbers together, and all the variables

21x-252=0

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

21x=252

x=252/21

x=12

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