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Simplifying (A + 4)(a + -15) = 0 Reorder the terms: (4 + A)(a + -15) = 0 Reorder the terms: (4 + A)(-15 + a) = 0 Multiply (4 + A) * (-15 + a) (4(-15 + a) + A(-15 + a)) = 0 ((-15 * 4 + a * 4) + A(-15 + a)) = 0 ((-60 + 4a) + A(-15 + a)) = 0 (-60 + 4a + (-15 * A + a * A)) = 0 (-60 + 4a + (-15A + aA)) = 0 Reorder the terms: (-60 + -15A + 4a + aA) = 0 (-60 + -15A + 4a + aA) = 0 Solving -60 + -15A + 4a + aA = 0 Solving for variable 'A'. Move all terms containing A to the left, all other terms to the right. Add '60' to each side of the equation. -60 + -15A + 4a + 60 + aA = 0 + 60 Reorder the terms: -60 + 60 + -15A + 4a + aA = 0 + 60 Combine like terms: -60 + 60 = 0 0 + -15A + 4a + aA = 0 + 60 -15A + 4a + aA = 0 + 60 Combine like terms: 0 + 60 = 60 -15A + 4a + aA = 60 Add '-4a' to each side of the equation. -15A + 4a + -4a + aA = 60 + -4a Combine like terms: 4a + -4a = 0 -15A + 0 + aA = 60 + -4a -15A + aA = 60 + -4a Reorder the terms: -60 + -15A + 4a + aA = 60 + -4a + -60 + 4a Reorder the terms: -60 + -15A + 4a + aA = 60 + -60 + -4a + 4a Combine like terms: 60 + -60 = 0 -60 + -15A + 4a + aA = 0 + -4a + 4a -60 + -15A + 4a + aA = -4a + 4a Combine like terms: -4a + 4a = 0 -60 + -15A + 4a + aA = 0 The solution to this equation could not be determined.
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