15=-3(2t-1)

Solution for 15=-3(2t-1) equation:

Simplifying
15 = -3(2t + -1)

Reorder the terms:
15 = -3(-1 + 2t)
15 = (-1 * -3 + 2t * -3)
15 = (3 + -6t)

Solving
15 = 3 + -6t

Solving for variable 't'.

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

Add '6t' to each side of the equation.
15 + 6t = 3 + -6t + 6t

Combine like terms: -6t + 6t = 0
15 + 6t = 3 + 0
15 + 6t = 3

Add '-15' to each side of the equation.
15 + -15 + 6t = 3 + -15

Combine like terms: 15 + -15 = 0
0 + 6t = 3 + -15
6t = 3 + -15

Combine like terms: 3 + -15 = -12
6t = -12

Divide each side by '6'.
t = -2

Simplifying
t = -2