21x-7x=510

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Solution for 21x-7x=510 equation: 



21x-7x=510

We move all terms to the left:

21x-7x-(510)=0

We add all the numbers together, and all the variables

14x-510=0

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

14x=510

x=510/14

x=36+3/7

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