3(7y+9)=-15

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Solution for 3(7y+9)=-15 equation: 


Simplifying
3(7y + 9) = -15

Reorder the terms:
3(9 + 7y) = -15
(9 * 3 + 7y * 3) = -15
(27 + 21y) = -15

Solving
27 + 21y = -15

Solving for variable 'y'.

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

Add '-27' to each side of the equation.
27 + -27 + 21y = -15 + -27

Combine like terms: 27 + -27 = 0
0 + 21y = -15 + -27
21y = -15 + -27

Combine like terms: -15 + -27 = -42
21y = -42

Divide each side by '21'.
y = -2

Simplifying
y = -2

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