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Simplifying -7(5a + 5) + -4 = -5(7a + -7) Reorder the terms: -7(5 + 5a) + -4 = -5(7a + -7) (5 * -7 + 5a * -7) + -4 = -5(7a + -7) (-35 + -35a) + -4 = -5(7a + -7) Reorder the terms: -35 + -4 + -35a = -5(7a + -7) Combine like terms: -35 + -4 = -39 -39 + -35a = -5(7a + -7) Reorder the terms: -39 + -35a = -5(-7 + 7a) -39 + -35a = (-7 * -5 + 7a * -5) -39 + -35a = (35 + -35a) Add '35a' to each side of the equation. -39 + -35a + 35a = 35 + -35a + 35a Combine like terms: -35a + 35a = 0 -39 + 0 = 35 + -35a + 35a -39 = 35 + -35a + 35a Combine like terms: -35a + 35a = 0 -39 = 35 + 0 -39 = 35 Solving -39 = 35 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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