10x-21=8x-21

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Solution for 10x-21=8x-21 equation: 



10x-21=8x-21

We move all terms to the left:

10x-21-(8x-21)=0

We get rid of parentheses

10x-8x+21-21=0

We add all the numbers together, and all the variables

2x=0

x=0/2

x=0

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