8x+15=5x+21

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Solution for 8x+15=5x+21 equation: 



8x+15=5x+21

We move all terms to the left:

8x+15-(5x+21)=0

We get rid of parentheses

8x-5x-21+15=0

We add all the numbers together, and all the variables

3x-6=0

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

3x=6

x=6/3

x=2

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