-15t-12t+20t+13t=-12

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Solution for -15t-12t+20t+13t=-12 equation: 


Simplifying
-15t + -12t + 20t + 13t = -12

Combine like terms: -15t + -12t = -27t
-27t + 20t + 13t = -12

Combine like terms: -27t + 20t = -7t
-7t + 13t = -12

Combine like terms: -7t + 13t = 6t
6t = -12

Solving
6t = -12

Solving for variable 't'.

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

Divide each side by '6'.
t = -2

Simplifying
t = -2

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