12+3t=21

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Solution for 12+3t=21 equation:


Simplifying
12 + 3t = 21

Solving
12 + 3t = 21

Solving for variable 't'.

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

Add '-12' to each side of the equation.
12 + -12 + 3t = 21 + -12

Combine like terms: 12 + -12 = 0
0 + 3t = 21 + -12
3t = 21 + -12

Combine like terms: 21 + -12 = 9
3t = 9

Divide each side by '3'.
t = 3

Simplifying
t = 3

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