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