21-7k=6k

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Solution for 21-7k=6k equation:


Simplifying
21 + -7k = 6k

Solving
21 + -7k = 6k

Solving for variable 'k'.

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

Add '-6k' to each side of the equation.
21 + -7k + -6k = 6k + -6k

Combine like terms: -7k + -6k = -13k
21 + -13k = 6k + -6k

Combine like terms: 6k + -6k = 0
21 + -13k = 0

Add '-21' to each side of the equation.
21 + -21 + -13k = 0 + -21

Combine like terms: 21 + -21 = 0
0 + -13k = 0 + -21
-13k = 0 + -21

Combine like terms: 0 + -21 = -21
-13k = -21

Divide each side by '-13'.
k = 1.615384615

Simplifying
k = 1.615384615

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