t+20=(t+10)+t

Solution for t+20=(t+10)+t equation:

Simplifying
t + 20 = (t + 10) + t

Reorder the terms:
20 + t = (t + 10) + t

Reorder the terms:
20 + t = (10 + t) + t

Remove parenthesis around (10 + t)
20 + t = 10 + t + t

Combine like terms: t + t = 2t
20 + t = 10 + 2t

Solving
20 + t = 10 + 2t

Solving for variable 't'.

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

Add '-2t' to each side of the equation.
20 + t + -2t = 10 + 2t + -2t

Combine like terms: t + -2t = -1t
20 + -1t = 10 + 2t + -2t

Combine like terms: 2t + -2t = 0
20 + -1t = 10 + 0
20 + -1t = 10

Add '-20' to each side of the equation.
20 + -20 + -1t = 10 + -20

Combine like terms: 20 + -20 = 0
0 + -1t = 10 + -20
-1t = 10 + -20

Combine like terms: 10 + -20 = -10
-1t = -10

Divide each side by '-1'.
t = 10

Simplifying
t = 10