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Simplifying r(x + -1y) = 2x + 7 (x * r + -1y * r) = 2x + 7 (rx + -1ry) = 2x + 7 Reorder the terms: rx + -1ry = 7 + 2x Solving rx + -1ry = 7 + 2x Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Reorder the terms: -7 + rx + -1ry + -2x = 7 + 2x + -7 + -2x Reorder the terms: -7 + rx + -1ry + -2x = 7 + -7 + 2x + -2x Combine like terms: 7 + -7 = 0 -7 + rx + -1ry + -2x = 0 + 2x + -2x -7 + rx + -1ry + -2x = 2x + -2x Combine like terms: 2x + -2x = 0 -7 + rx + -1ry + -2x = 0 The solution to this equation could not be determined.
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