5=-4t-21

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Solution for 5=-4t-21 equation:


Simplifying
5 = -4t + -21

Reorder the terms:
5 = -21 + -4t

Solving
5 = -21 + -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.
5 + 4t = -21 + -4t + 4t

Combine like terms: -4t + 4t = 0
5 + 4t = -21 + 0
5 + 4t = -21

Add '-5' to each side of the equation.
5 + -5 + 4t = -21 + -5

Combine like terms: 5 + -5 = 0
0 + 4t = -21 + -5
4t = -21 + -5

Combine like terms: -21 + -5 = -26
4t = -26

Divide each side by '4'.
t = -6.5

Simplifying
t = -6.5

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