t(7+t)=4(t+7)

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Solution for t(7+t)=4(t+7) equation:


Simplifying
t(7 + t) = 4(t + 7)
(7 * t + t * t) = 4(t + 7)
(7t + t2) = 4(t + 7)

Reorder the terms:
7t + t2 = 4(7 + t)
7t + t2 = (7 * 4 + t * 4)
7t + t2 = (28 + 4t)

Solving
7t + t2 = 28 + 4t

Solving for variable 't'.

Reorder the terms:
-28 + 7t + -4t + t2 = 28 + 4t + -28 + -4t

Combine like terms: 7t + -4t = 3t
-28 + 3t + t2 = 28 + 4t + -28 + -4t

Reorder the terms:
-28 + 3t + t2 = 28 + -28 + 4t + -4t

Combine like terms: 28 + -28 = 0
-28 + 3t + t2 = 0 + 4t + -4t
-28 + 3t + t2 = 4t + -4t

Combine like terms: 4t + -4t = 0
-28 + 3t + t2 = 0

Factor a trinomial.
(-7 + -1t)(4 + -1t) = 0

Subproblem 1

Set the factor '(-7 + -1t)' equal to zero and attempt to solve: Simplifying -7 + -1t = 0 Solving -7 + -1t = 0 Move all terms containing t to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + -1t = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -1t = 0 + 7 -1t = 0 + 7 Combine like terms: 0 + 7 = 7 -1t = 7 Divide each side by '-1'. t = -7 Simplifying t = -7

Subproblem 2

Set the factor '(4 + -1t)' equal to zero and attempt to solve: Simplifying 4 + -1t = 0 Solving 4 + -1t = 0 Move all terms containing t to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -1t = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1t = 0 + -4 -1t = 0 + -4 Combine like terms: 0 + -4 = -4 -1t = -4 Divide each side by '-1'. t = 4 Simplifying t = 4

Solution

t = {-7, 4}

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