y=45-4y

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Solution for y=45-4y equation: 



y=45-4y

We move all terms to the left:

y-(45-4y)=0

We add all the numbers together, and all the variables

y-(-4y+45)=0

We get rid of parentheses

y+4y-45=0

We add all the numbers together, and all the variables

5y-45=0

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

5y=45

y=45/5

y=9

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