(7t-21)t(t+4)=15

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Solution for (7t-21)t(t+4)=15 equation:


Simplifying
(7t + -21) * t(t + 4) = 15

Reorder the terms:
(-21 + 7t) * t(t + 4) = 15

Reorder the terms:
(-21 + 7t) * t(4 + t) = 15

Reorder the terms for easier multiplication:
t(-21 + 7t)(4 + t) = 15

Multiply (-21 + 7t) * (4 + t)
t(-21(4 + t) + 7t * (4 + t)) = 15
t((4 * -21 + t * -21) + 7t * (4 + t)) = 15
t((-84 + -21t) + 7t * (4 + t)) = 15
t(-84 + -21t + (4 * 7t + t * 7t)) = 15
t(-84 + -21t + (28t + 7t2)) = 15

Combine like terms: -21t + 28t = 7t
t(-84 + 7t + 7t2) = 15
(-84 * t + 7t * t + 7t2 * t) = 15
(-84t + 7t2 + 7t3) = 15

Solving
-84t + 7t2 + 7t3 = 15

Solving for variable 't'.

Reorder the terms:
-15 + -84t + 7t2 + 7t3 = 15 + -15

Combine like terms: 15 + -15 = 0
-15 + -84t + 7t2 + 7t3 = 0

The solution to this equation could not be determined.

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