21-7x=x+5

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Solution for 21-7x=x+5 equation: 



21-7x=x+5

We move all terms to the left:

21-7x-(x+5)=0

We get rid of parentheses

-7x-x-5+21=0

We add all the numbers together, and all the variables

-8x+16=0

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

-8x=-16

x=-16/-8

x=+2

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