8x-15=21+6x

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Solution for 8x-15=21+6x equation: 



8x-15=21+6x

We move all terms to the left:

8x-15-(21+6x)=0

We add all the numbers together, and all the variables

8x-(6x+21)-15=0

We get rid of parentheses

8x-6x-21-15=0

We add all the numbers together, and all the variables

2x-36=0

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

2x=36

x=36/2

x=18

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