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