6(2y+7)=21.5

Solution for 6(2y+7)=21.5 equation:

Simplifying
6(2y + 7) = 21.5

Reorder the terms:
6(7 + 2y) = 21.5
(7 * 6 + 2y * 6) = 21.5
(42 + 12y) = 21.5

Solving
42 + 12y = 21.5

Solving for variable 'y'.

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

Add '-42' to each side of the equation.
42 + -42 + 12y = 21.5 + -42

Combine like terms: 42 + -42 = 0
0 + 12y = 21.5 + -42
12y = 21.5 + -42

Combine like terms: 21.5 + -42 = -20.5
12y = -20.5

Divide each side by '12'.
y = -1.708333333

Simplifying
y = -1.708333333