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Simplifying -3 + 4(a + 7) = 28 + 4a Reorder the terms: -3 + 4(7 + a) = 28 + 4a -3 + (7 * 4 + a * 4) = 28 + 4a -3 + (28 + 4a) = 28 + 4a Combine like terms: -3 + 28 = 25 25 + 4a = 28 + 4a Add '-4a' to each side of the equation. 25 + 4a + -4a = 28 + 4a + -4a Combine like terms: 4a + -4a = 0 25 + 0 = 28 + 4a + -4a 25 = 28 + 4a + -4a Combine like terms: 4a + -4a = 0 25 = 28 + 0 25 = 28 Solving 25 = 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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