(7k-3)(k-2k+7)=

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


Simplifying
(7k + -3)(k + -2k + 7) = 0

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

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

Combine like terms: k + -2k = -1k
(-3 + 7k)(7 + -1k) = 0

Multiply (-3 + 7k) * (7 + -1k)
(-3(7 + -1k) + 7k * (7 + -1k)) = 0
((7 * -3 + -1k * -3) + 7k * (7 + -1k)) = 0
((-21 + 3k) + 7k * (7 + -1k)) = 0
(-21 + 3k + (7 * 7k + -1k * 7k)) = 0
(-21 + 3k + (49k + -7k2)) = 0

Combine like terms: 3k + 49k = 52k
(-21 + 52k + -7k2) = 0

Solving
-21 + 52k + -7k2 = 0

Solving for variable 'k'.

Factor a trinomial.
(-7 + k)(3 + -7k) = 0

Subproblem 1

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

Subproblem 2

Set the factor '(3 + -7k)' equal to zero and attempt to solve: Simplifying 3 + -7k = 0 Solving 3 + -7k = 0 Move all terms containing k to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -7k = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -7k = 0 + -3 -7k = 0 + -3 Combine like terms: 0 + -3 = -3 -7k = -3 Divide each side by '-7'. k = 0.4285714286 Simplifying k = 0.4285714286

Solution

k = {7, 0.4285714286}

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