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Simplifying 5a + 4(3a + -1a) = 4 + 13a Combine like terms: 3a + -1a = 2a 5a + 4(2a) = 4 + 13a Remove parenthesis around (2a) 5a + 4 * 2a = 4 + 13a Multiply 4 * 2 5a + 8a = 4 + 13a Combine like terms: 5a + 8a = 13a 13a = 4 + 13a Add '-13a' to each side of the equation. 13a + -13a = 4 + 13a + -13a Combine like terms: 13a + -13a = 0 0 = 4 + 13a + -13a Combine like terms: 13a + -13a = 0 0 = 4 + 0 0 = 4 Solving 0 = 4 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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