3y+4y+2y=90

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Solution for 3y+4y+2y=90 equation: 



3y+4y+2y=90

We move all terms to the left:

3y+4y+2y-(90)=0

We add all the numbers together, and all the variables

9y-90=0

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

9y=90

y=90/9

y=10

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