30+9k=3(4k+7)

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Solution for 30+9k=3(4k+7) equation:


Simplifying
30 + 9k = 3(4k + 7)

Reorder the terms:
30 + 9k = 3(7 + 4k)
30 + 9k = (7 * 3 + 4k * 3)
30 + 9k = (21 + 12k)

Solving
30 + 9k = 21 + 12k

Solving for variable 'k'.

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

Add '-12k' to each side of the equation.
30 + 9k + -12k = 21 + 12k + -12k

Combine like terms: 9k + -12k = -3k
30 + -3k = 21 + 12k + -12k

Combine like terms: 12k + -12k = 0
30 + -3k = 21 + 0
30 + -3k = 21

Add '-30' to each side of the equation.
30 + -30 + -3k = 21 + -30

Combine like terms: 30 + -30 = 0
0 + -3k = 21 + -30
-3k = 21 + -30

Combine like terms: 21 + -30 = -9
-3k = -9

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

Simplifying
k = 3

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