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Simplifying x(x + -15 + -1r) = -15r Reorder the terms: x(-15 + -1r + x) = -15r (-15 * x + -1r * x + x * x) = -15r Reorder the terms: (-1rx + -15x + x2) = -15r (-1rx + -15x + x2) = -15r Solving -1rx + -15x + x2 = -15r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '15r' to each side of the equation. -1rx + -15x + 15r + x2 = -15r + 15r Reorder the terms: 15r + -1rx + -15x + x2 = -15r + 15r Combine like terms: -15r + 15r = 0 15r + -1rx + -15x + x2 = 0 Add '15x' to each side of the equation. 15r + -1rx + -15x + 15x + x2 = 0 + 15x Combine like terms: -15x + 15x = 0 15r + -1rx + 0 + x2 = 0 + 15x 15r + -1rx + x2 = 0 + 15x Remove the zero: 15r + -1rx + x2 = 15x Add '-1x2' to each side of the equation. 15r + -1rx + x2 + -1x2 = 15x + -1x2 Combine like terms: x2 + -1x2 = 0 15r + -1rx + 0 = 15x + -1x2 15r + -1rx = 15x + -1x2 Reorder the terms: 15r + -1rx + -15x + x2 = 15x + -15x + -1x2 + x2 Combine like terms: 15x + -15x = 0 15r + -1rx + -15x + x2 = 0 + -1x2 + x2 15r + -1rx + -15x + x2 = -1x2 + x2 Combine like terms: -1x2 + x2 = 0 15r + -1rx + -15x + x2 = 0 The solution to this equation could not be determined.
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