40=4y-9

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Solution for 40=4y-9 equation: 



40=4y-9

We move all terms to the left:

40-(4y-9)=0

We get rid of parentheses

-4y+9+40=0

We add all the numbers together, and all the variables

-4y+49=0

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

-4y=-49

y=-49/-4

y=12+1/4

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