9x+3=-6+7x=21

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Solution for 9x+3=-6+7x=21 equation: 



9x+3=-6+7x=21

We move all terms to the left:

9x+3-(-6+7x)=0

We add all the numbers together, and all the variables

9x-(7x-6)+3=0

We get rid of parentheses

9x-7x+6+3=0

We add all the numbers together, and all the variables

2x+9=0

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

2x=-9

x=-9/2

x=-4+1/2

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