3x+9=-81

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Solution for 3x+9=-81 equation: 



3x+9=-81

We move all terms to the left:

3x+9-(-81)=0

We add all the numbers together, and all the variables

3x+90=0

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

3x=-90

x=-90/3

x=-30

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