21+3x=6+8x

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Solution for 21+3x=6+8x equation: 



21+3x=6+8x

We move all terms to the left:

21+3x-(6+8x)=0

We add all the numbers together, and all the variables

3x-(8x+6)+21=0

We get rid of parentheses

3x-8x-6+21=0

We add all the numbers together, and all the variables

-5x+15=0

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

-5x=-15

x=-15/-5

x=+3

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