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Simplifying (2a + 5)(s + 4) = 0 Reorder the terms: (5 + 2a)(s + 4) = 0 Reorder the terms: (5 + 2a)(4 + s) = 0 Multiply (5 + 2a) * (4 + s) (5(4 + s) + 2a * (4 + s)) = 0 ((4 * 5 + s * 5) + 2a * (4 + s)) = 0 ((20 + 5s) + 2a * (4 + s)) = 0 (20 + 5s + (4 * 2a + s * 2a)) = 0 (20 + 5s + (8a + 2as)) = 0 Reorder the terms: (20 + 8a + 2as + 5s) = 0 (20 + 8a + 2as + 5s) = 0 Solving 20 + 8a + 2as + 5s = 0 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-20' to each side of the equation. 20 + 8a + 2as + -20 + 5s = 0 + -20 Reorder the terms: 20 + -20 + 8a + 2as + 5s = 0 + -20 Combine like terms: 20 + -20 = 0 0 + 8a + 2as + 5s = 0 + -20 8a + 2as + 5s = 0 + -20 Combine like terms: 0 + -20 = -20 8a + 2as + 5s = -20 Add '-5s' to each side of the equation. 8a + 2as + 5s + -5s = -20 + -5s Combine like terms: 5s + -5s = 0 8a + 2as + 0 = -20 + -5s 8a + 2as = -20 + -5s Reorder the terms: 20 + 8a + 2as + 5s = -20 + -5s + 20 + 5s Reorder the terms: 20 + 8a + 2as + 5s = -20 + 20 + -5s + 5s Combine like terms: -20 + 20 = 0 20 + 8a + 2as + 5s = 0 + -5s + 5s 20 + 8a + 2as + 5s = -5s + 5s Combine like terms: -5s + 5s = 0 20 + 8a + 2as + 5s = 0 The solution to this equation could not be determined.
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