21-7x=10x+21

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Solution for 21-7x=10x+21 equation: 



21-7x=10x+21

We move all terms to the left:

21-7x-(10x+21)=0

We get rid of parentheses

-7x-10x-21+21=0

We add all the numbers together, and all the variables

-17x=0

x=0/-17

x=0

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