3(7-y)-4y=7

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Solution for 3(7-y)-4y=7 equation: 



3(7-y)-4y=7

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We add all the numbers together, and all the variables

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

We multiply parentheses

-4y-3y+21-7=0

We add all the numbers together, and all the variables

-7y+14=0

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

-7y=-14

y=-14/-7

y=+2

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