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Simplifying (K + 3)(k + -7) = 0 Reorder the terms: (3 + K)(k + -7) = 0 Reorder the terms: (3 + K)(-7 + k) = 0 Multiply (3 + K) * (-7 + k) (3(-7 + k) + K(-7 + k)) = 0 ((-7 * 3 + k * 3) + K(-7 + k)) = 0 ((-21 + 3k) + K(-7 + k)) = 0 (-21 + 3k + (-7 * K + k * K)) = 0 (-21 + 3k + (-7K + kK)) = 0 Reorder the terms: (-21 + -7K + 3k + kK) = 0 (-21 + -7K + 3k + kK) = 0 Solving -21 + -7K + 3k + kK = 0 Solving for variable 'K'. Move all terms containing K to the left, all other terms to the right. Add '21' to each side of the equation. -21 + -7K + 3k + 21 + kK = 0 + 21 Reorder the terms: -21 + 21 + -7K + 3k + kK = 0 + 21 Combine like terms: -21 + 21 = 0 0 + -7K + 3k + kK = 0 + 21 -7K + 3k + kK = 0 + 21 Combine like terms: 0 + 21 = 21 -7K + 3k + kK = 21 Add '-3k' to each side of the equation. -7K + 3k + -3k + kK = 21 + -3k Combine like terms: 3k + -3k = 0 -7K + 0 + kK = 21 + -3k -7K + kK = 21 + -3k Reorder the terms: -21 + -7K + 3k + kK = 21 + -3k + -21 + 3k Reorder the terms: -21 + -7K + 3k + kK = 21 + -21 + -3k + 3k Combine like terms: 21 + -21 = 0 -21 + -7K + 3k + kK = 0 + -3k + 3k -21 + -7K + 3k + kK = -3k + 3k Combine like terms: -3k + 3k = 0 -21 + -7K + 3k + kK = 0 The solution to this equation could not be determined.
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