-9(t-8)-(t+7)=1

Solution for -9(t-8)-(t+7)=1 equation:

Simplifying
-9(t + -8) + -1(t + 7) = 1

Reorder the terms:
-9(-8 + t) + -1(t + 7) = 1
(-8 * -9 + t * -9) + -1(t + 7) = 1
(72 + -9t) + -1(t + 7) = 1

Reorder the terms:
72 + -9t + -1(7 + t) = 1
72 + -9t + (7 * -1 + t * -1) = 1
72 + -9t + (-7 + -1t) = 1

Reorder the terms:
72 + -7 + -9t + -1t = 1

Combine like terms: 72 + -7 = 65
65 + -9t + -1t = 1

Combine like terms: -9t + -1t = -10t
65 + -10t = 1

Solving
65 + -10t = 1

Solving for variable 't'.

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

Add '-65' to each side of the equation.
65 + -65 + -10t = 1 + -65

Combine like terms: 65 + -65 = 0
0 + -10t = 1 + -65
-10t = 1 + -65

Combine like terms: 1 + -65 = -64
-10t = -64

Divide each side by '-10'.
t = 6.4

Simplifying
t = 6.4