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Simplifying -7(a + -3) = 11 + -7a Reorder the terms: -7(-3 + a) = 11 + -7a (-3 * -7 + a * -7) = 11 + -7a (21 + -7a) = 11 + -7a Add '7a' to each side of the equation. 21 + -7a + 7a = 11 + -7a + 7a Combine like terms: -7a + 7a = 0 21 + 0 = 11 + -7a + 7a 21 = 11 + -7a + 7a Combine like terms: -7a + 7a = 0 21 = 11 + 0 21 = 11 Solving 21 = 11 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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