3x+9=-7x-11

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Solution for 3x+9=-7x-11 equation: 



3x+9=-7x-11

We move all terms to the left:

3x+9-(-7x-11)=0

We get rid of parentheses

3x+7x+11+9=0

We add all the numbers together, and all the variables

10x+20=0

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

10x=-20

x=-20/10

x=-2

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