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Simplifying (a + 9) + -1(5a + -13) = 4(3 + -1a) Reorder the terms: (9 + a) + -1(5a + -13) = 4(3 + -1a) Remove parenthesis around (9 + a) 9 + a + -1(5a + -13) = 4(3 + -1a) Reorder the terms: 9 + a + -1(-13 + 5a) = 4(3 + -1a) 9 + a + (-13 * -1 + 5a * -1) = 4(3 + -1a) 9 + a + (13 + -5a) = 4(3 + -1a) Reorder the terms: 9 + 13 + a + -5a = 4(3 + -1a) Combine like terms: 9 + 13 = 22 22 + a + -5a = 4(3 + -1a) Combine like terms: a + -5a = -4a 22 + -4a = 4(3 + -1a) 22 + -4a = (3 * 4 + -1a * 4) 22 + -4a = (12 + -4a) Add '4a' to each side of the equation. 22 + -4a + 4a = 12 + -4a + 4a Combine like terms: -4a + 4a = 0 22 + 0 = 12 + -4a + 4a 22 = 12 + -4a + 4a Combine like terms: -4a + 4a = 0 22 = 12 + 0 22 = 12 Solving 22 = 12 Couldn't find a variable to solve for. This equation is invalid, the left and right sides are not equal, therefore there is no solution.
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