9y+4=-9y-4

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Solution for 9y+4=-9y-4 equation: 



9y+4=-9y-4

We move all terms to the left:

9y+4-(-9y-4)=0

We get rid of parentheses

9y+9y+4+4=0

We add all the numbers together, and all the variables

18y+8=0

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

18y=-8

y=-8/18

y=-4/9

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