9x+3=-4+7x+21

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Solution for 9x+3=-4+7x+21 equation: 



9x+3=-4+7x+21

We move all terms to the left:

9x+3-(-4+7x+21)=0

We add all the numbers together, and all the variables

9x-(7x+17)+3=0

We get rid of parentheses

9x-7x-17+3=0

We add all the numbers together, and all the variables

2x-14=0

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

2x=14

x=14/2

x=7

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