3(2y+7)=15

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Solution for 3(2y+7)=15 equation: 


Simplifying
3(2y + 7) = 15

Reorder the terms:
3(7 + 2y) = 15
(7 * 3 + 2y * 3) = 15
(21 + 6y) = 15

Solving
21 + 6y = 15

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 + 6y = 15 + -21

Combine like terms: 21 + -21 = 0
0 + 6y = 15 + -21
6y = 15 + -21

Combine like terms: 15 + -21 = -6
6y = -6

Divide each side by '6'.
y = -1

Simplifying
y = -1

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