21x-15=6x+9

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Solution for 21x-15=6x+9 equation: 



21x-15=6x+9

We move all terms to the left:

21x-15-(6x+9)=0

We get rid of parentheses

21x-6x-9-15=0

We add all the numbers together, and all the variables

15x-24=0

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

15x=24

x=24/15

x=1+3/5

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