-6.9(3t+5)-2.1(2t-6)=

Solution for -6.9(3t+5)-2.1(2t-6)= equation:

Simplifying
-6.9(3t + 5) + -2.1(2t + -6) = 0

Reorder the terms:
-6.9(5 + 3t) + -2.1(2t + -6) = 0
(5 * -6.9 + 3t * -6.9) + -2.1(2t + -6) = 0
(-34.5 + -20.7t) + -2.1(2t + -6) = 0

Reorder the terms:
-34.5 + -20.7t + -2.1(-6 + 2t) = 0
-34.5 + -20.7t + (-6 * -2.1 + 2t * -2.1) = 0
-34.5 + -20.7t + (12.6 + -4.2t) = 0

Reorder the terms:
-34.5 + 12.6 + -20.7t + -4.2t = 0

Combine like terms: -34.5 + 12.6 = -21.9
-21.9 + -20.7t + -4.2t = 0

Combine like terms: -20.7t + -4.2t = -24.9t
-21.9 + -24.9t = 0

Solving
-21.9 + -24.9t = 0

Solving for variable 't'.

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

Add '21.9' to each side of the equation.
-21.9 + 21.9 + -24.9t = 0 + 21.9

Combine like terms: -21.9 + 21.9 = 0.0
0.0 + -24.9t = 0 + 21.9
-24.9t = 0 + 21.9

Combine like terms: 0 + 21.9 = 21.9
-24.9t = 21.9

Divide each side by '-24.9'.
t = -0.8795180723

Simplifying
t = -0.8795180723