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Simplifying 7(a + 4) = 7(a + -2) Reorder the terms: 7(4 + a) = 7(a + -2) (4 * 7 + a * 7) = 7(a + -2) (28 + 7a) = 7(a + -2) Reorder the terms: 28 + 7a = 7(-2 + a) 28 + 7a = (-2 * 7 + a * 7) 28 + 7a = (-14 + 7a) Add '-7a' to each side of the equation. 28 + 7a + -7a = -14 + 7a + -7a Combine like terms: 7a + -7a = 0 28 + 0 = -14 + 7a + -7a 28 = -14 + 7a + -7a Combine like terms: 7a + -7a = 0 28 = -14 + 0 28 = -14 Solving 28 = -14 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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