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Simplifying 21xy + 15x + 35ry + 25r = 0 Reorder the terms: 25r + 35ry + 15x + 21xy = 0 Solving 25r + 35ry + 15x + 21xy = 0 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-15x' to each side of the equation. 25r + 35ry + 15x + -15x + 21xy = 0 + -15x Combine like terms: 15x + -15x = 0 25r + 35ry + 0 + 21xy = 0 + -15x 25r + 35ry + 21xy = 0 + -15x Remove the zero: 25r + 35ry + 21xy = -15x Add '-21xy' to each side of the equation. 25r + 35ry + 21xy + -21xy = -15x + -21xy Combine like terms: 21xy + -21xy = 0 25r + 35ry + 0 = -15x + -21xy 25r + 35ry = -15x + -21xy Reorder the terms: 25r + 35ry + 15x + 21xy = -15x + 15x + -21xy + 21xy Combine like terms: -15x + 15x = 0 25r + 35ry + 15x + 21xy = 0 + -21xy + 21xy 25r + 35ry + 15x + 21xy = -21xy + 21xy Combine like terms: -21xy + 21xy = 0 25r + 35ry + 15x + 21xy = 0 The solution to this equation could not be determined.
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