12=t-9

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Solution for 12=t-9 equation:


Simplifying
12 = t + -9

Reorder the terms:
12 = -9 + t

Solving
12 = -9 + t

Solving for variable 't'.

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

Add '-1t' to each side of the equation.
12 + -1t = -9 + t + -1t

Combine like terms: t + -1t = 0
12 + -1t = -9 + 0
12 + -1t = -9

Add '-12' to each side of the equation.
12 + -12 + -1t = -9 + -12

Combine like terms: 12 + -12 = 0
0 + -1t = -9 + -12
-1t = -9 + -12

Combine like terms: -9 + -12 = -21
-1t = -21

Divide each side by '-1'.
t = 21

Simplifying
t = 21

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