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Simplifying r(3x + -1y) + -3r(x + -7y) = 0 (3x * r + -1y * r) + -3r(x + -7y) = 0 (3rx + -1ry) + -3r(x + -7y) = 0 3rx + -1ry + (x * -3r + -7y * -3r) = 0 3rx + -1ry + (-3rx + 21ry) = 0 Reorder the terms: 3rx + -3rx + -1ry + 21ry = 0 Combine like terms: 3rx + -3rx = 0 0 + -1ry + 21ry = 0 -1ry + 21ry = 0 Combine like terms: -1ry + 21ry = 20ry 20ry = 0 Solving 20ry = 0 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Divide each side by '20'. ry = 0.0 Simplifying ry = 0.0 The solution to this equation could not be determined.
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