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Simplifying -7(a + -1) + -3 = -7(a + -4) Reorder the terms: -7(-1 + a) + -3 = -7(a + -4) (-1 * -7 + a * -7) + -3 = -7(a + -4) (7 + -7a) + -3 = -7(a + -4) Reorder the terms: 7 + -3 + -7a = -7(a + -4) Combine like terms: 7 + -3 = 4 4 + -7a = -7(a + -4) Reorder the terms: 4 + -7a = -7(-4 + a) 4 + -7a = (-4 * -7 + a * -7) 4 + -7a = (28 + -7a) Add '7a' to each side of the equation. 4 + -7a + 7a = 28 + -7a + 7a Combine like terms: -7a + 7a = 0 4 + 0 = 28 + -7a + 7a 4 = 28 + -7a + 7a Combine like terms: -7a + 7a = 0 4 = 28 + 0 4 = 28 Solving 4 = 28 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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