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Simplifying r(z7 + 5) + -1(z7 + 5) = 0 Reorder the terms: r(5 + z7) + -1(z7 + 5) = 0 (5 * r + z7 * r) + -1(z7 + 5) = 0 (5r + rz7) + -1(z7 + 5) = 0 Reorder the terms: 5r + rz7 + -1(5 + z7) = 0 5r + rz7 + (5 * -1 + z7 * -1) = 0 5r + rz7 + (-5 + -1z7) = 0 Reorder the terms: -5 + 5r + rz7 + -1z7 = 0 Solving -5 + 5r + rz7 + -1z7 = 0 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5r + rz7 + 5 + -1z7 = 0 + 5 Reorder the terms: -5 + 5 + 5r + rz7 + -1z7 = 0 + 5 Combine like terms: -5 + 5 = 0 0 + 5r + rz7 + -1z7 = 0 + 5 5r + rz7 + -1z7 = 0 + 5 Combine like terms: 0 + 5 = 5 5r + rz7 + -1z7 = 5 Add 'z7' to each side of the equation. 5r + rz7 + -1z7 + z7 = 5 + z7 Combine like terms: -1z7 + z7 = 0 5r + rz7 + 0 = 5 + z7 5r + rz7 = 5 + z7 Reorder the terms: -5 + 5r + rz7 + -1z7 = 5 + z7 + -5 + -1z7 Reorder the terms: -5 + 5r + rz7 + -1z7 = 5 + -5 + z7 + -1z7 Combine like terms: 5 + -5 = 0 -5 + 5r + rz7 + -1z7 = 0 + z7 + -1z7 -5 + 5r + rz7 + -1z7 = z7 + -1z7 Combine like terms: z7 + -1z7 = 0 -5 + 5r + rz7 + -1z7 = 0 The solution to this equation could not be determined.
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