180-y=99-9y

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Solution for 180-y=99-9y equation: 



180-y=99-9y

We move all terms to the left:

180-y-(99-9y)=0

We add all the numbers together, and all the variables

-y-(-9y+99)+180=0

We add all the numbers together, and all the variables

-1y-(-9y+99)+180=0

We get rid of parentheses

-1y+9y-99+180=0

We add all the numbers together, and all the variables

8y+81=0

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

8y=-81

y=-81/8

y=-10+1/8

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