3(k+7)=9k

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Solution for 3(k+7)=9k equation:


Simplifying
3(k + 7) = 9k

Reorder the terms:
3(7 + k) = 9k
(7 * 3 + k * 3) = 9k
(21 + 3k) = 9k

Solving
21 + 3k = 9k

Solving for variable 'k'.

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

Add '-9k' to each side of the equation.
21 + 3k + -9k = 9k + -9k

Combine like terms: 3k + -9k = -6k
21 + -6k = 9k + -9k

Combine like terms: 9k + -9k = 0
21 + -6k = 0

Add '-21' to each side of the equation.
21 + -21 + -6k = 0 + -21

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

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

Divide each side by '-6'.
k = 3.5

Simplifying
k = 3.5

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