5(21+7y)-4y=12

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Solution for 5(21+7y)-4y=12 equation: 



5(21+7y)-4y=12

We move all terms to the left:

5(21+7y)-4y-(12)=0

We add all the numbers together, and all the variables

5(7y+21)-4y-12=0

We add all the numbers together, and all the variables

-4y+5(7y+21)-12=0

We multiply parentheses

-4y+35y+105-12=0

We add all the numbers together, and all the variables

31y+93=0

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

31y=-93

y=-93/31

y=-3

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