-9(t-3)-(t+6)=4

Solution for -9(t-3)-(t+6)=4 equation:

Simplifying
-9(t + -3) + -1(t + 6) = 4

Reorder the terms:
-9(-3 + t) + -1(t + 6) = 4
(-3 * -9 + t * -9) + -1(t + 6) = 4
(27 + -9t) + -1(t + 6) = 4

Reorder the terms:
27 + -9t + -1(6 + t) = 4
27 + -9t + (6 * -1 + t * -1) = 4
27 + -9t + (-6 + -1t) = 4

Reorder the terms:
27 + -6 + -9t + -1t = 4

Combine like terms: 27 + -6 = 21
21 + -9t + -1t = 4

Combine like terms: -9t + -1t = -10t
21 + -10t = 4

Solving
21 + -10t = 4

Solving for variable 't'.

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

Add '-21' to each side of the equation.
21 + -21 + -10t = 4 + -21

Combine like terms: 21 + -21 = 0
0 + -10t = 4 + -21
-10t = 4 + -21

Combine like terms: 4 + -21 = -17
-10t = -17

Divide each side by '-10'.
t = 1.7

Simplifying
t = 1.7