(-2r+7)(6r-3)=

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Solution for (-2r+7)(6r-3)= equation:


Simplifying
(-2r + 7)(6r + -3) = 0

Reorder the terms:
(7 + -2r)(6r + -3) = 0

Reorder the terms:
(7 + -2r)(-3 + 6r) = 0

Multiply (7 + -2r) * (-3 + 6r)
(7(-3 + 6r) + -2r * (-3 + 6r)) = 0
((-3 * 7 + 6r * 7) + -2r * (-3 + 6r)) = 0
((-21 + 42r) + -2r * (-3 + 6r)) = 0
(-21 + 42r + (-3 * -2r + 6r * -2r)) = 0
(-21 + 42r + (6r + -12r2)) = 0

Combine like terms: 42r + 6r = 48r
(-21 + 48r + -12r2) = 0

Solving
-21 + 48r + -12r2 = 0

Solving for variable 'r'.

Factor out the Greatest Common Factor (GCF), '3'.
3(-7 + 16r + -4r2) = 0

Factor a trinomial.
3((-7 + 2r)(1 + -2r)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(-7 + 2r)' equal to zero and attempt to solve: Simplifying -7 + 2r = 0 Solving -7 + 2r = 0 Move all terms containing r to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + 2r = 0 + 7 Combine like terms: -7 + 7 = 0 0 + 2r = 0 + 7 2r = 0 + 7 Combine like terms: 0 + 7 = 7 2r = 7 Divide each side by '2'. r = 3.5 Simplifying r = 3.5

Subproblem 2

Set the factor '(1 + -2r)' equal to zero and attempt to solve: Simplifying 1 + -2r = 0 Solving 1 + -2r = 0 Move all terms containing r to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + -2r = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -2r = 0 + -1 -2r = 0 + -1 Combine like terms: 0 + -1 = -1 -2r = -1 Divide each side by '-2'. r = 0.5 Simplifying r = 0.5

Solution

r = {3.5, 0.5}

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