3(2y+5)=21

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Solution for 3(2y+5)=21 equation:


Simplifying
3(2y + 5) = 21

Reorder the terms:
3(5 + 2y) = 21
(5 * 3 + 2y * 3) = 21
(15 + 6y) = 21

Solving
15 + 6y = 21

Solving for variable 'y'.

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

Add '-15' to each side of the equation.
15 + -15 + 6y = 21 + -15

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

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

Divide each side by '6'.
y = 1

Simplifying
y = 1

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