(6r+13)(r+12)=0

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Solution for (6r+13)(r+12)=0 equation:


Simplifying
(6r + 13)(r + 12) = 0

Reorder the terms:
(13 + 6r)(r + 12) = 0

Reorder the terms:
(13 + 6r)(12 + r) = 0

Multiply (13 + 6r) * (12 + r)
(13(12 + r) + 6r * (12 + r)) = 0
((12 * 13 + r * 13) + 6r * (12 + r)) = 0
((156 + 13r) + 6r * (12 + r)) = 0
(156 + 13r + (12 * 6r + r * 6r)) = 0
(156 + 13r + (72r + 6r2)) = 0

Combine like terms: 13r + 72r = 85r
(156 + 85r + 6r2) = 0

Solving
156 + 85r + 6r2 = 0

Solving for variable 'r'.

Factor a trinomial.
(12 + r)(13 + 6r) = 0

Subproblem 1

Set the factor '(12 + r)' equal to zero and attempt to solve: Simplifying 12 + r = 0 Solving 12 + r = 0 Move all terms containing r to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + r = 0 + -12 Combine like terms: 12 + -12 = 0 0 + r = 0 + -12 r = 0 + -12 Combine like terms: 0 + -12 = -12 r = -12 Simplifying r = -12

Subproblem 2

Set the factor '(13 + 6r)' equal to zero and attempt to solve: Simplifying 13 + 6r = 0 Solving 13 + 6r = 0 Move all terms containing r to the left, all other terms to the right. Add '-13' to each side of the equation. 13 + -13 + 6r = 0 + -13 Combine like terms: 13 + -13 = 0 0 + 6r = 0 + -13 6r = 0 + -13 Combine like terms: 0 + -13 = -13 6r = -13 Divide each side by '6'. r = -2.166666667 Simplifying r = -2.166666667

Solution

r = {-12, -2.166666667}

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