5[K-2]=10[3K+9]

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Solution for 5[K-2]=10[3K+9] equation:


Simplifying
5[K + -2] = 10[3K + 9]

Reorder the terms:
5[-2 + K] = 10[3K + 9]
[-2 * 5 + K * 5] = 10[3K + 9]
[-10 + 5K] = 10[3K + 9]

Reorder the terms:
-10 + 5K = 10[9 + 3K]
-10 + 5K = [9 * 10 + 3K * 10]
-10 + 5K = [90 + 30K]

Solving
-10 + 5K = 90 + 30K

Solving for variable 'K'.

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

Add '-30K' to each side of the equation.
-10 + 5K + -30K = 90 + 30K + -30K

Combine like terms: 5K + -30K = -25K
-10 + -25K = 90 + 30K + -30K

Combine like terms: 30K + -30K = 0
-10 + -25K = 90 + 0
-10 + -25K = 90

Add '10' to each side of the equation.
-10 + 10 + -25K = 90 + 10

Combine like terms: -10 + 10 = 0
0 + -25K = 90 + 10
-25K = 90 + 10

Combine like terms: 90 + 10 = 100
-25K = 100

Divide each side by '-25'.
K = -4

Simplifying
K = -4

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