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Simplifying -3(u + 1) + 7u = 4(u + -1) + -7 Reorder the terms: -3(1 + u) + 7u = 4(u + -1) + -7 (1 * -3 + u * -3) + 7u = 4(u + -1) + -7 (-3 + -3u) + 7u = 4(u + -1) + -7 Combine like terms: -3u + 7u = 4u -3 + 4u = 4(u + -1) + -7 Reorder the terms: -3 + 4u = 4(-1 + u) + -7 -3 + 4u = (-1 * 4 + u * 4) + -7 -3 + 4u = (-4 + 4u) + -7 Reorder the terms: -3 + 4u = -4 + -7 + 4u Combine like terms: -4 + -7 = -11 -3 + 4u = -11 + 4u Add '-4u' to each side of the equation. -3 + 4u + -4u = -11 + 4u + -4u Combine like terms: 4u + -4u = 0 -3 + 0 = -11 + 4u + -4u -3 = -11 + 4u + -4u Combine like terms: 4u + -4u = 0 -3 = -11 + 0 -3 = -11 Solving -3 = -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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