9x+21=2(3x+4)+15

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Solution for 9x+21=2(3x+4)+15 equation: 



9x+21=2(3x+4)+15

We move all terms to the left:

9x+21-(2(3x+4)+15)=0



We calculate terms in parentheses: -(2(3x+4)+15), so:

2(3x+4)+15

We multiply parentheses

6x+8+15

We add all the numbers together, and all the variables

6x+23

Back to the equation:

-(6x+23)



We get rid of parentheses

9x-6x-23+21=0

We add all the numbers together, and all the variables

3x-2=0

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

3x=2

x=2/3

x=2/3

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