3y+8y-4=7y+9-1

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Solution for 3y+8y-4=7y+9-1 equation: 



3y+8y-4=7y+9-1

We move all terms to the left:

3y+8y-4-(7y+9-1)=0

We add all the numbers together, and all the variables

3y+8y-(7y+8)-4=0

We add all the numbers together, and all the variables

11y-(7y+8)-4=0

We get rid of parentheses

11y-7y-8-4=0

We add all the numbers together, and all the variables

4y-12=0

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

4y=12

y=12/4

y=3

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