21-10+t+5+t+15+2t=360

Solution for 21-10+t+5+t+15+2t=360 equation:

Simplifying
21 + -10 + t + 5 + t + 15 + 2t = 360

Reorder the terms:
21 + -10 + 5 + 15 + t + t + 2t = 360

Combine like terms: 21 + -10 = 11
11 + 5 + 15 + t + t + 2t = 360

Combine like terms: 11 + 5 = 16
16 + 15 + t + t + 2t = 360

Combine like terms: 16 + 15 = 31
31 + t + t + 2t = 360

Combine like terms: t + t = 2t
31 + 2t + 2t = 360

Combine like terms: 2t + 2t = 4t
31 + 4t = 360

Solving
31 + 4t = 360

Solving for variable 't'.

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

Add '-31' to each side of the equation.
31 + -31 + 4t = 360 + -31

Combine like terms: 31 + -31 = 0
0 + 4t = 360 + -31
4t = 360 + -31

Combine like terms: 360 + -31 = 329
4t = 329

Divide each side by '4'.
t = 82.25

Simplifying
t = 82.25