-2(t-9)-(t+1)=3

Solution for -2(t-9)-(t+1)=3 equation:

Simplifying
-2(t + -9) + -1(t + 1) = 3

Reorder the terms:
-2(-9 + t) + -1(t + 1) = 3
(-9 * -2 + t * -2) + -1(t + 1) = 3
(18 + -2t) + -1(t + 1) = 3

Reorder the terms:
18 + -2t + -1(1 + t) = 3
18 + -2t + (1 * -1 + t * -1) = 3
18 + -2t + (-1 + -1t) = 3

Reorder the terms:
18 + -1 + -2t + -1t = 3

Combine like terms: 18 + -1 = 17
17 + -2t + -1t = 3

Combine like terms: -2t + -1t = -3t
17 + -3t = 3

Solving
17 + -3t = 3

Solving for variable 't'.

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

Add '-17' to each side of the equation.
17 + -17 + -3t = 3 + -17

Combine like terms: 17 + -17 = 0
0 + -3t = 3 + -17
-3t = 3 + -17

Combine like terms: 3 + -17 = -14
-3t = -14

Divide each side by '-3'.
t = 4.666666667

Simplifying
t = 4.666666667