7t-4t=21

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Solution for 7t-4t=21 equation: 


Simplifying
7t + -4t = 21

Combine like terms: 7t + -4t = 3t
3t = 21

Solving
3t = 21

Solving for variable 't'.

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

Divide each side by '3'.
t = 7

Simplifying
t = 7

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