5(k^2+k+3)+-k^2=2(2k^2+4k+7)+-5

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Solution for 5(k^2+k+3)+-k^2=2(2k^2+4k+7)+-5 equation:


Simplifying
5(k2 + k + 3) + -1k2 = 2(2k2 + 4k + 7) + -5

Reorder the terms:
5(3 + k + k2) + -1k2 = 2(2k2 + 4k + 7) + -5
(3 * 5 + k * 5 + k2 * 5) + -1k2 = 2(2k2 + 4k + 7) + -5
(15 + 5k + 5k2) + -1k2 = 2(2k2 + 4k + 7) + -5

Combine like terms: 5k2 + -1k2 = 4k2
15 + 5k + 4k2 = 2(2k2 + 4k + 7) + -5

Reorder the terms:
15 + 5k + 4k2 = 2(7 + 4k + 2k2) + -5
15 + 5k + 4k2 = (7 * 2 + 4k * 2 + 2k2 * 2) + -5
15 + 5k + 4k2 = (14 + 8k + 4k2) + -5

Reorder the terms:
15 + 5k + 4k2 = 14 + -5 + 8k + 4k2

Combine like terms: 14 + -5 = 9
15 + 5k + 4k2 = 9 + 8k + 4k2

Add '-4k2' to each side of the equation.
15 + 5k + 4k2 + -4k2 = 9 + 8k + 4k2 + -4k2

Combine like terms: 4k2 + -4k2 = 0
15 + 5k + 0 = 9 + 8k + 4k2 + -4k2
15 + 5k = 9 + 8k + 4k2 + -4k2

Combine like terms: 4k2 + -4k2 = 0
15 + 5k = 9 + 8k + 0
15 + 5k = 9 + 8k

Solving
15 + 5k = 9 + 8k

Solving for variable 'k'.

Move all terms containing k to the left, all other terms to the right.

Add '-8k' to each side of the equation.
15 + 5k + -8k = 9 + 8k + -8k

Combine like terms: 5k + -8k = -3k
15 + -3k = 9 + 8k + -8k

Combine like terms: 8k + -8k = 0
15 + -3k = 9 + 0
15 + -3k = 9

Add '-15' to each side of the equation.
15 + -15 + -3k = 9 + -15

Combine like terms: 15 + -15 = 0
0 + -3k = 9 + -15
-3k = 9 + -15

Combine like terms: 9 + -15 = -6
-3k = -6

Divide each side by '-3'.
k = 2

Simplifying
k = 2

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