-2(t-3)-(t+7)=7

Solution for -2(t-3)-(t+7)=7 equation:

Simplifying
-2(t + -3) + -1(t + 7) = 7

Reorder the terms:
-2(-3 + t) + -1(t + 7) = 7
(-3 * -2 + t * -2) + -1(t + 7) = 7
(6 + -2t) + -1(t + 7) = 7

Reorder the terms:
6 + -2t + -1(7 + t) = 7
6 + -2t + (7 * -1 + t * -1) = 7
6 + -2t + (-7 + -1t) = 7

Reorder the terms:
6 + -7 + -2t + -1t = 7

Combine like terms: 6 + -7 = -1
-1 + -2t + -1t = 7

Combine like terms: -2t + -1t = -3t
-1 + -3t = 7

Solving
-1 + -3t = 7

Solving for variable 't'.

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

Add '1' to each side of the equation.
-1 + 1 + -3t = 7 + 1

Combine like terms: -1 + 1 = 0
0 + -3t = 7 + 1
-3t = 7 + 1

Combine like terms: 7 + 1 = 8
-3t = 8

Divide each side by '-3'.
t = -2.666666667

Simplifying
t = -2.666666667