16n^2-161n=-5n^2-280

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Solution for 16n^2-161n=-5n^2-280 equation:


Simplifying
16n2 + -161n = -5n2 + -280

Reorder the terms:
-161n + 16n2 = -5n2 + -280

Reorder the terms:
-161n + 16n2 = -280 + -5n2

Solving
-161n + 16n2 = -280 + -5n2

Solving for variable 'n'.

Reorder the terms:
280 + -161n + 16n2 + 5n2 = -280 + -5n2 + 280 + 5n2

Combine like terms: 16n2 + 5n2 = 21n2
280 + -161n + 21n2 = -280 + -5n2 + 280 + 5n2

Reorder the terms:
280 + -161n + 21n2 = -280 + 280 + -5n2 + 5n2

Combine like terms: -280 + 280 = 0
280 + -161n + 21n2 = 0 + -5n2 + 5n2
280 + -161n + 21n2 = -5n2 + 5n2

Combine like terms: -5n2 + 5n2 = 0
280 + -161n + 21n2 = 0

Factor out the Greatest Common Factor (GCF), '7'.
7(40 + -23n + 3n2) = 0

Factor a trinomial.
7((8 + -3n)(5 + -1n)) = 0

Ignore the factor 7.

Subproblem 1

Set the factor '(8 + -3n)' equal to zero and attempt to solve: Simplifying 8 + -3n = 0 Solving 8 + -3n = 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 + -3n = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -3n = 0 + -8 -3n = 0 + -8 Combine like terms: 0 + -8 = -8 -3n = -8 Divide each side by '-3'. n = 2.666666667 Simplifying n = 2.666666667

Subproblem 2

Set the factor '(5 + -1n)' equal to zero and attempt to solve: Simplifying 5 + -1n = 0 Solving 5 + -1n = 0 Move all terms containing n to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -1n = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1n = 0 + -5 -1n = 0 + -5 Combine like terms: 0 + -5 = -5 -1n = -5 Divide each side by '-1'. n = 5 Simplifying n = 5

Solution

n = {2.666666667, 5}

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