-3x-9=-4x-16

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Solution for -3x-9=-4x-16 equation: 



-3x-9=-4x-16

We move all terms to the left:

-3x-9-(-4x-16)=0

We get rid of parentheses

-3x+4x+16-9=0

We add all the numbers together, and all the variables

x+7=0

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

x=-7

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