t-1=-20

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Solution for t-1=-20 equation: 


Simplifying
t + -1 = -20

Reorder the terms:
-1 + t = -20

Solving
-1 + t = -20

Solving for variable 't'.

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

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

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

Combine like terms: -20 + 1 = -19
t = -19

Simplifying
t = -19

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