3K+9=9-(K+8)

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Solution for 3K+9=9-(K+8) equation:


Simplifying
3K + 9 = 9 + -1(K + 8)

Reorder the terms:
9 + 3K = 9 + -1(K + 8)

Reorder the terms:
9 + 3K = 9 + -1(8 + K)
9 + 3K = 9 + (8 * -1 + K * -1)
9 + 3K = 9 + (-8 + -1K)

Combine like terms: 9 + -8 = 1
9 + 3K = 1 + -1K

Solving
9 + 3K = 1 + -1K

Solving for variable 'K'.

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

Add 'K' to each side of the equation.
9 + 3K + K = 1 + -1K + K

Combine like terms: 3K + K = 4K
9 + 4K = 1 + -1K + K

Combine like terms: -1K + K = 0
9 + 4K = 1 + 0
9 + 4K = 1

Add '-9' to each side of the equation.
9 + -9 + 4K = 1 + -9

Combine like terms: 9 + -9 = 0
0 + 4K = 1 + -9
4K = 1 + -9

Combine like terms: 1 + -9 = -8
4K = -8

Divide each side by '4'.
K = -2

Simplifying
K = -2

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