21=6-5t

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Solution for 21=6-5t equation:


Simplifying
21 = 6 + -5t

Solving
21 = 6 + -5t

Solving for variable 't'.

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

Add '5t' to each side of the equation.
21 + 5t = 6 + -5t + 5t

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

Add '-21' to each side of the equation.
21 + -21 + 5t = 6 + -21

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

Combine like terms: 6 + -21 = -15
5t = -15

Divide each side by '5'.
t = -3

Simplifying
t = -3

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