21+6k=7(2k-5)-8

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Solution for 21+6k=7(2k-5)-8 equation:


Simplifying
21 + 6k = 7(2k + -5) + -8

Reorder the terms:
21 + 6k = 7(-5 + 2k) + -8
21 + 6k = (-5 * 7 + 2k * 7) + -8
21 + 6k = (-35 + 14k) + -8

Reorder the terms:
21 + 6k = -35 + -8 + 14k

Combine like terms: -35 + -8 = -43
21 + 6k = -43 + 14k

Solving
21 + 6k = -43 + 14k

Solving for variable 'k'.

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

Add '-14k' to each side of the equation.
21 + 6k + -14k = -43 + 14k + -14k

Combine like terms: 6k + -14k = -8k
21 + -8k = -43 + 14k + -14k

Combine like terms: 14k + -14k = 0
21 + -8k = -43 + 0
21 + -8k = -43

Add '-21' to each side of the equation.
21 + -21 + -8k = -43 + -21

Combine like terms: 21 + -21 = 0
0 + -8k = -43 + -21
-8k = -43 + -21

Combine like terms: -43 + -21 = -64
-8k = -64

Divide each side by '-8'.
k = 8

Simplifying
k = 8

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