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Simplifying 5a(3 + -1a) + 6a2 + -13a = 2a + 1a2 (3 * 5a + -1a * 5a) + 6a2 + -13a = 2a + 1a2 (15a + -5a2) + 6a2 + -13a = 2a + 1a2 Reorder the terms: 15a + -13a + -5a2 + 6a2 = 2a + 1a2 Combine like terms: 15a + -13a = 2a 2a + -5a2 + 6a2 = 2a + 1a2 Combine like terms: -5a2 + 6a2 = 1a2 2a + 1a2 = 2a + 1a2 Add '-2a' to each side of the equation. 2a + -2a + 1a2 = 2a + -2a + 1a2 Combine like terms: 2a + -2a = 0 0 + 1a2 = 2a + -2a + 1a2 1a2 = 2a + -2a + 1a2 Combine like terms: 2a + -2a = 0 1a2 = 0 + 1a2 1a2 = 1a2 Add '-1a2' to each side of the equation. 1a2 + -1a2 = 1a2 + -1a2 Combine like terms: 1a2 + -1a2 = 0 0 = 1a2 + -1a2 Combine like terms: 1a2 + -1a2 = 0 0 = 0 Solving 0 = 0 Couldn't find a variable to solve for. This equation is an identity, all real numbers are solutions.
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