9x+3=5x+21

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Solution for 9x+3=5x+21 equation: 



9x+3=5x+21

We move all terms to the left:

9x+3-(5x+21)=0

We get rid of parentheses

9x-5x-21+3=0

We add all the numbers together, and all the variables

4x-18=0

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

4x=18

x=18/4

x=4+1/2

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