t-7=-21

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Solution for t-7=-21 equation: 


Simplifying
t + -7 = -21

Reorder the terms:
-7 + t = -21

Solving
-7 + t = -21

Solving for variable 't'.

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

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

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

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

Simplifying
t = -14

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