5x-21=4x-3

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Solution for 5x-21=4x-3 equation: 



5x-21=4x-3

We move all terms to the left:

5x-21-(4x-3)=0

We get rid of parentheses

5x-4x+3-21=0

We add all the numbers together, and all the variables

x-18=0

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

x=18

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