4y+9y=20

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Solution for 4y+9y=20 equation: 



4y+9y=20

We move all terms to the left:

4y+9y-(20)=0

We add all the numbers together, and all the variables

13y-20=0

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

13y=20

y=20/13

y=1+7/13

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