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Simplifying (3r + -1s)(r + -6) = -13r + 18 Reorder the terms: (3r + -1s)(-6 + r) = -13r + 18 Multiply (3r + -1s) * (-6 + r) (3r * (-6 + r) + -1s * (-6 + r)) = -13r + 18 ((-6 * 3r + r * 3r) + -1s * (-6 + r)) = -13r + 18 ((-18r + 3r2) + -1s * (-6 + r)) = -13r + 18 (-18r + 3r2 + (-6 * -1s + r * -1s)) = -13r + 18 Reorder the terms: (-18r + 3r2 + (-1rs + 6s)) = -13r + 18 (-18r + 3r2 + (-1rs + 6s)) = -13r + 18 Reorder the terms: (-18r + -1rs + 3r2 + 6s) = -13r + 18 (-18r + -1rs + 3r2 + 6s) = -13r + 18 Reorder the terms: -18r + -1rs + 3r2 + 6s = 18 + -13r Solving -18r + -1rs + 3r2 + 6s = 18 + -13r Solving for variable 'r'. Reorder the terms: -18 + -18r + 13r + -1rs + 3r2 + 6s = 18 + -13r + -18 + 13r Combine like terms: -18r + 13r = -5r -18 + -5r + -1rs + 3r2 + 6s = 18 + -13r + -18 + 13r Reorder the terms: -18 + -5r + -1rs + 3r2 + 6s = 18 + -18 + -13r + 13r Combine like terms: 18 + -18 = 0 -18 + -5r + -1rs + 3r2 + 6s = 0 + -13r + 13r -18 + -5r + -1rs + 3r2 + 6s = -13r + 13r Combine like terms: -13r + 13r = 0 -18 + -5r + -1rs + 3r2 + 6s = 0 The solution to this equation could not be determined.
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