4k-4(3k+4)=2k+(5k-21)

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Solution for 4k-4(3k+4)=2k+(5k-21) equation:


Simplifying
4k + -4(3k + 4) = 2k + (5k + -21)

Reorder the terms:
4k + -4(4 + 3k) = 2k + (5k + -21)
4k + (4 * -4 + 3k * -4) = 2k + (5k + -21)
4k + (-16 + -12k) = 2k + (5k + -21)

Reorder the terms:
-16 + 4k + -12k = 2k + (5k + -21)

Combine like terms: 4k + -12k = -8k
-16 + -8k = 2k + (5k + -21)

Reorder the terms:
-16 + -8k = 2k + (-21 + 5k)

Remove parenthesis around (-21 + 5k)
-16 + -8k = 2k + -21 + 5k

Reorder the terms:
-16 + -8k = -21 + 2k + 5k

Combine like terms: 2k + 5k = 7k
-16 + -8k = -21 + 7k

Solving
-16 + -8k = -21 + 7k

Solving for variable 'k'.

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

Add '-7k' to each side of the equation.
-16 + -8k + -7k = -21 + 7k + -7k

Combine like terms: -8k + -7k = -15k
-16 + -15k = -21 + 7k + -7k

Combine like terms: 7k + -7k = 0
-16 + -15k = -21 + 0
-16 + -15k = -21

Add '16' to each side of the equation.
-16 + 16 + -15k = -21 + 16

Combine like terms: -16 + 16 = 0
0 + -15k = -21 + 16
-15k = -21 + 16

Combine like terms: -21 + 16 = -5
-15k = -5

Divide each side by '-15'.
k = 0.3333333333

Simplifying
k = 0.3333333333

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