-3(t-1)=-21

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Solution for -3(t-1)=-21 equation: 


Simplifying
-3(t + -1) = -21

Reorder the terms:
-3(-1 + t) = -21
(-1 * -3 + t * -3) = -21
(3 + -3t) = -21

Solving
3 + -3t = -21

Solving for variable 't'.

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

Add '-3' to each side of the equation.
3 + -3 + -3t = -21 + -3

Combine like terms: 3 + -3 = 0
0 + -3t = -21 + -3
-3t = -21 + -3

Combine like terms: -21 + -3 = -24
-3t = -24

Divide each side by '-3'.
t = 8

Simplifying
t = 8

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