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Simplifying 3a + [2 + 3(a + -1)] = 2(3a + 4) Reorder the terms: 3a + [2 + 3(-1 + a)] = 2(3a + 4) 3a + [2 + (-1 * 3 + a * 3)] = 2(3a + 4) 3a + [2 + (-3 + 3a)] = 2(3a + 4) Combine like terms: 2 + -3 = -1 3a + [-1 + 3a] = 2(3a + 4) Remove brackets around [-1 + 3a] 3a + -1 + 3a = 2(3a + 4) Reorder the terms: -1 + 3a + 3a = 2(3a + 4) Combine like terms: 3a + 3a = 6a -1 + 6a = 2(3a + 4) Reorder the terms: -1 + 6a = 2(4 + 3a) -1 + 6a = (4 * 2 + 3a * 2) -1 + 6a = (8 + 6a) Add '-6a' to each side of the equation. -1 + 6a + -6a = 8 + 6a + -6a Combine like terms: 6a + -6a = 0 -1 + 0 = 8 + 6a + -6a -1 = 8 + 6a + -6a Combine like terms: 6a + -6a = 0 -1 = 8 + 0 -1 = 8 Solving -1 = 8 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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