t-1-4t+8=21

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Solution for t-1-4t+8=21 equation:


Simplifying
t + -1 + -4t + 8 = 21

Reorder the terms:
-1 + 8 + t + -4t = 21

Combine like terms: -1 + 8 = 7
7 + t + -4t = 21

Combine like terms: t + -4t = -3t
7 + -3t = 21

Solving
7 + -3t = 21

Solving for variable 't'.

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

Add '-7' to each side of the equation.
7 + -7 + -3t = 21 + -7

Combine like terms: 7 + -7 = 0
0 + -3t = 21 + -7
-3t = 21 + -7

Combine like terms: 21 + -7 = 14
-3t = 14

Divide each side by '-3'.
t = -4.666666667

Simplifying
t = -4.666666667

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