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Simplifying -7(a + 10) = -7a + -69 Reorder the terms: -7(10 + a) = -7a + -69 (10 * -7 + a * -7) = -7a + -69 (-70 + -7a) = -7a + -69 Reorder the terms: -70 + -7a = -69 + -7a Add '7a' to each side of the equation. -70 + -7a + 7a = -69 + -7a + 7a Combine like terms: -7a + 7a = 0 -70 + 0 = -69 + -7a + 7a -70 = -69 + -7a + 7a Combine like terms: -7a + 7a = 0 -70 = -69 + 0 -70 = -69 Solving -70 = -69 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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