4y+9y=4y-7

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Solution for 4y+9y=4y-7 equation: 



4y+9y=4y-7

We move all terms to the left:

4y+9y-(4y-7)=0

We add all the numbers together, and all the variables

13y-(4y-7)=0

We get rid of parentheses

13y-4y+7=0

We add all the numbers together, and all the variables

9y+7=0

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

9y=-7

y=-7/9

y=-7/9

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