(6-12)t+(4-21-9-8)=

Solution for (6-12)t+(4-21-9-8)= equation:

Simplifying
(6 + -12) * t + (4 + -21 + -9 + -8) = 0

Combine like terms: 6 + -12 = -6
(-6) * t + (4 + -21 + -9 + -8) = 0

Combine like terms: 4 + -21 = -17
-6t + (-17 + -9 + -8) = 0

Combine like terms: -17 + -9 = -26
-6t + (-26 + -8) = 0

Combine like terms: -26 + -8 = -34
-6t + (-34) = 0
-6t + -34 = 0

Reorder the terms:
-34 + -6t = 0

Solving
-34 + -6t = 0

Solving for variable 't'.

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

Add '34' to each side of the equation.
-34 + 34 + -6t = 0 + 34

Combine like terms: -34 + 34 = 0
0 + -6t = 0 + 34
-6t = 0 + 34

Combine like terms: 0 + 34 = 34
-6t = 34

Divide each side by '-6'.
t = -5.666666667

Simplifying
t = -5.666666667