-16-7n=-21n^2+3n

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Solution for -16-7n=-21n^2+3n equation:


Simplifying
-16 + -7n = -21n2 + 3n

Reorder the terms:
-16 + -7n = 3n + -21n2

Solving
-16 + -7n = 3n + -21n2

Solving for variable 'n'.

Combine like terms: -7n + -3n = -10n
-16 + -10n + 21n2 = 3n + -21n2 + -3n + 21n2

Reorder the terms:
-16 + -10n + 21n2 = 3n + -3n + -21n2 + 21n2

Combine like terms: 3n + -3n = 0
-16 + -10n + 21n2 = 0 + -21n2 + 21n2
-16 + -10n + 21n2 = -21n2 + 21n2

Combine like terms: -21n2 + 21n2 = 0
-16 + -10n + 21n2 = 0

Factor a trinomial.
(-2 + -3n)(8 + -7n) = 0

Subproblem 1

Set the factor '(-2 + -3n)' equal to zero and attempt to solve: Simplifying -2 + -3n = 0 Solving -2 + -3n = 0 Move all terms containing n to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + -3n = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -3n = 0 + 2 -3n = 0 + 2 Combine like terms: 0 + 2 = 2 -3n = 2 Divide each side by '-3'. n = -0.6666666667 Simplifying n = -0.6666666667

Subproblem 2

Set the factor '(8 + -7n)' equal to zero and attempt to solve: Simplifying 8 + -7n = 0 Solving 8 + -7n = 0 Move all terms containing n to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + -7n = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -7n = 0 + -8 -7n = 0 + -8 Combine like terms: 0 + -8 = -8 -7n = -8 Divide each side by '-7'. n = 1.142857143 Simplifying n = 1.142857143

Solution

n = {-0.6666666667, 1.142857143}

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