7x+12=-9x-20

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Solution for 7x+12=-9x-20 equation: 



7x+12=-9x-20

We move all terms to the left:

7x+12-(-9x-20)=0

We get rid of parentheses

7x+9x+20+12=0

We add all the numbers together, and all the variables

16x+32=0

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

16x=-32

x=-32/16

x=-2

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