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Simplifying -4a + -18 + 8a = 4(a + -5) + -1 Reorder the terms: -18 + -4a + 8a = 4(a + -5) + -1 Combine like terms: -4a + 8a = 4a -18 + 4a = 4(a + -5) + -1 Reorder the terms: -18 + 4a = 4(-5 + a) + -1 -18 + 4a = (-5 * 4 + a * 4) + -1 -18 + 4a = (-20 + 4a) + -1 Reorder the terms: -18 + 4a = -20 + -1 + 4a Combine like terms: -20 + -1 = -21 -18 + 4a = -21 + 4a Add '-4a' to each side of the equation. -18 + 4a + -4a = -21 + 4a + -4a Combine like terms: 4a + -4a = 0 -18 + 0 = -21 + 4a + -4a -18 = -21 + 4a + -4a Combine like terms: 4a + -4a = 0 -18 = -21 + 0 -18 = -21 Solving -18 = -21 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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