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

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

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

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

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

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

Reorder the terms:
10 + 2t = (20 + t)

Remove parenthesis around (20 + t)
10 + 2t = 20 + t

Solving
10 + 2t = 20 + t

Solving for variable 't'.

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

Add '-1t' to each side of the equation.
10 + 2t + -1t = 20 + t + -1t

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

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

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

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

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

Divide each side by '1'.
t = 10

Simplifying
t = 10