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Simplifying 3(m + 7) + -1n(m + 7) = 0 Reorder the terms: 3(7 + m) + -1n(m + 7) = 0 (7 * 3 + m * 3) + -1n(m + 7) = 0 (21 + 3m) + -1n(m + 7) = 0 Reorder the terms: 21 + 3m + -1n(7 + m) = 0 21 + 3m + (7 * -1n + m * -1n) = 0 Reorder the terms: 21 + 3m + (-1mn + -7n) = 0 21 + 3m + (-1mn + -7n) = 0 Solving 21 + 3m + -1mn + -7n = 0 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-21' to each side of the equation. 21 + 3m + -1mn + -21 + -7n = 0 + -21 Reorder the terms: 21 + -21 + 3m + -1mn + -7n = 0 + -21 Combine like terms: 21 + -21 = 0 0 + 3m + -1mn + -7n = 0 + -21 3m + -1mn + -7n = 0 + -21 Combine like terms: 0 + -21 = -21 3m + -1mn + -7n = -21 Add '7n' to each side of the equation. 3m + -1mn + -7n + 7n = -21 + 7n Combine like terms: -7n + 7n = 0 3m + -1mn + 0 = -21 + 7n 3m + -1mn = -21 + 7n Reorder the terms: 21 + 3m + -1mn + -7n = -21 + 7n + 21 + -7n Reorder the terms: 21 + 3m + -1mn + -7n = -21 + 21 + 7n + -7n Combine like terms: -21 + 21 = 0 21 + 3m + -1mn + -7n = 0 + 7n + -7n 21 + 3m + -1mn + -7n = 7n + -7n Combine like terms: 7n + -7n = 0 21 + 3m + -1mn + -7n = 0 The solution to this equation could not be determined.
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