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Simplifying u(x + -9) + 7(x + -9) = 0 Reorder the terms: u(-9 + x) + 7(x + -9) = 0 (-9 * u + x * u) + 7(x + -9) = 0 (-9u + ux) + 7(x + -9) = 0 Reorder the terms: -9u + ux + 7(-9 + x) = 0 -9u + ux + (-9 * 7 + x * 7) = 0 -9u + ux + (-63 + 7x) = 0 Reorder the terms: -63 + -9u + ux + 7x = 0 Solving -63 + -9u + ux + 7x = 0 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '63' to each side of the equation. -63 + -9u + ux + 63 + 7x = 0 + 63 Reorder the terms: -63 + 63 + -9u + ux + 7x = 0 + 63 Combine like terms: -63 + 63 = 0 0 + -9u + ux + 7x = 0 + 63 -9u + ux + 7x = 0 + 63 Combine like terms: 0 + 63 = 63 -9u + ux + 7x = 63 Add '-7x' to each side of the equation. -9u + ux + 7x + -7x = 63 + -7x Combine like terms: 7x + -7x = 0 -9u + ux + 0 = 63 + -7x -9u + ux = 63 + -7x Reorder the terms: -63 + -9u + ux + 7x = 63 + -7x + -63 + 7x Reorder the terms: -63 + -9u + ux + 7x = 63 + -63 + -7x + 7x Combine like terms: 63 + -63 = 0 -63 + -9u + ux + 7x = 0 + -7x + 7x -63 + -9u + ux + 7x = -7x + 7x Combine like terms: -7x + 7x = 0 -63 + -9u + ux + 7x = 0 The solution to this equation could not be determined.
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