12t+80=21t-100

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Solution for 12t+80=21t-100 equation:


Simplifying
12t + 80 = 21t + -100

Reorder the terms:
80 + 12t = 21t + -100

Reorder the terms:
80 + 12t = -100 + 21t

Solving
80 + 12t = -100 + 21t

Solving for variable 't'.

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

Add '-21t' to each side of the equation.
80 + 12t + -21t = -100 + 21t + -21t

Combine like terms: 12t + -21t = -9t
80 + -9t = -100 + 21t + -21t

Combine like terms: 21t + -21t = 0
80 + -9t = -100 + 0
80 + -9t = -100

Add '-80' to each side of the equation.
80 + -80 + -9t = -100 + -80

Combine like terms: 80 + -80 = 0
0 + -9t = -100 + -80
-9t = -100 + -80

Combine like terms: -100 + -80 = -180
-9t = -180

Divide each side by '-9'.
t = 20

Simplifying
t = 20

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