y+9=-y-9

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



y+9=-y-9
We move all terms to the left:
y+9-(-y-9)=0
We add all the numbers together, and all the variables
y-(-1y-9)+9=0
We get rid of parentheses
y+1y+9+9=0
We add all the numbers together, and all the variables
2y+18=0
We move all terms containing y to the left, all other terms to the right
2y=-18
y=-18/2
y=-9

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