20-10y+4y=9y-10

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Solution for 20-10y+4y=9y-10 equation: 



20-10y+4y=9y-10

We move all terms to the left:

20-10y+4y-(9y-10)=0

We add all the numbers together, and all the variables

-6y-(9y-10)+20=0

We get rid of parentheses

-6y-9y+10+20=0

We add all the numbers together, and all the variables

-15y+30=0

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

-15y=-30

y=-30/-15

y=+2

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