31=9t-13t+7

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Solution for 31=9t-13t+7 equation:


Simplifying
31 = 9t + -13t + 7

Reorder the terms:
31 = 7 + 9t + -13t

Combine like terms: 9t + -13t = -4t
31 = 7 + -4t

Solving
31 = 7 + -4t

Solving for variable 't'.

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

Add '4t' to each side of the equation.
31 + 4t = 7 + -4t + 4t

Combine like terms: -4t + 4t = 0
31 + 4t = 7 + 0
31 + 4t = 7

Add '-31' to each side of the equation.
31 + -31 + 4t = 7 + -31

Combine like terms: 31 + -31 = 0
0 + 4t = 7 + -31
4t = 7 + -31

Combine like terms: 7 + -31 = -24
4t = -24

Divide each side by '4'.
t = -6

Simplifying
t = -6

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