(6+21t)-(3t-5)=

Solution for (6+21t)-(3t-5)= equation:

Simplifying
(6 + 21t) + -1(3t + -5) = 0

Remove parenthesis around (6 + 21t)
6 + 21t + -1(3t + -5) = 0

Reorder the terms:
6 + 21t + -1(-5 + 3t) = 0
6 + 21t + (-5 * -1 + 3t * -1) = 0
6 + 21t + (5 + -3t) = 0

Reorder the terms:
6 + 5 + 21t + -3t = 0

Combine like terms: 6 + 5 = 11
11 + 21t + -3t = 0

Combine like terms: 21t + -3t = 18t
11 + 18t = 0

Solving
11 + 18t = 0

Solving for variable 't'.

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

Add '-11' to each side of the equation.
11 + -11 + 18t = 0 + -11

Combine like terms: 11 + -11 = 0
0 + 18t = 0 + -11
18t = 0 + -11

Combine like terms: 0 + -11 = -11
18t = -11

Divide each side by '18'.
t = -0.6111111111

Simplifying
t = -0.6111111111