8x+27+6x-21=90

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Solution for 8x+27+6x-21=90 equation: 



8x+27+6x-21=90

We move all terms to the left:

8x+27+6x-21-(90)=0

We add all the numbers together, and all the variables

14x-84=0

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

14x=84

x=84/14

x=6

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