3(4y+7)=81

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Solution for 3(4y+7)=81 equation: 


Simplifying
3(4y + 7) = 81

Reorder the terms:
3(7 + 4y) = 81
(7 * 3 + 4y * 3) = 81
(21 + 12y) = 81

Solving
21 + 12y = 81

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Add '-21' to each side of the equation.
21 + -21 + 12y = 81 + -21

Combine like terms: 21 + -21 = 0
0 + 12y = 81 + -21
12y = 81 + -21

Combine like terms: 81 + -21 = 60
12y = 60

Divide each side by '12'.
y = 5

Simplifying
y = 5

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