-21=-3t

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Solution for -21=-3t equation:


Simplifying
-21 = -3t

Solving
-21 = -3t

Solving for variable 't'.

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

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

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

Add '21' to each side of the equation.
-21 + 21 + 3t = 0 + 21

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

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

Divide each side by '3'.
t = 7

Simplifying
t = 7

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