21=14+7t

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Solution for 21=14+7t equation:


Simplifying
21 = 14 + 7t

Solving
21 = 14 + 7t

Solving for variable 't'.

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

Add '-7t' to each side of the equation.
21 + -7t = 14 + 7t + -7t

Combine like terms: 7t + -7t = 0
21 + -7t = 14 + 0
21 + -7t = 14

Add '-21' to each side of the equation.
21 + -21 + -7t = 14 + -21

Combine like terms: 21 + -21 = 0
0 + -7t = 14 + -21
-7t = 14 + -21

Combine like terms: 14 + -21 = -7
-7t = -7

Divide each side by '-7'.
t = 1

Simplifying
t = 1

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