-2(t-6)-(t+9)=4

Solution for -2(t-6)-(t+9)=4 equation:

Simplifying
-2(t + -6) + -1(t + 9) = 4

Reorder the terms:
-2(-6 + t) + -1(t + 9) = 4
(-6 * -2 + t * -2) + -1(t + 9) = 4
(12 + -2t) + -1(t + 9) = 4

Reorder the terms:
12 + -2t + -1(9 + t) = 4
12 + -2t + (9 * -1 + t * -1) = 4
12 + -2t + (-9 + -1t) = 4

Reorder the terms:
12 + -9 + -2t + -1t = 4

Combine like terms: 12 + -9 = 3
3 + -2t + -1t = 4

Combine like terms: -2t + -1t = -3t
3 + -3t = 4

Solving
3 + -3t = 4

Solving for variable 't'.

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

Add '-3' to each side of the equation.
3 + -3 + -3t = 4 + -3

Combine like terms: 3 + -3 = 0
0 + -3t = 4 + -3
-3t = 4 + -3

Combine like terms: 4 + -3 = 1
-3t = 1

Divide each side by '-3'.
t = -0.3333333333

Simplifying
t = -0.3333333333