7x+12=-9x-4

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Solution for 7x+12=-9x-4 equation: 



7x+12=-9x-4

We move all terms to the left:

7x+12-(-9x-4)=0

We get rid of parentheses

7x+9x+4+12=0

We add all the numbers together, and all the variables

16x+16=0

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

16x=-16

x=-16/16

x=-1

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