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Simplifying (n + -3)(x + 7) = n Reorder the terms: (-3 + n)(x + 7) = n Reorder the terms: (-3 + n)(7 + x) = n Multiply (-3 + n) * (7 + x) (-3(7 + x) + n(7 + x)) = n ((7 * -3 + x * -3) + n(7 + x)) = n ((-21 + -3x) + n(7 + x)) = n (-21 + -3x + (7 * n + x * n)) = n (-21 + -3x + (7n + nx)) = n Reorder the terms: (-21 + 7n + nx + -3x) = n (-21 + 7n + nx + -3x) = n Solving -21 + 7n + nx + -3x = n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-1n' to each side of the equation. -21 + 7n + nx + -1n + -3x = n + -1n Reorder the terms: -21 + 7n + -1n + nx + -3x = n + -1n Combine like terms: 7n + -1n = 6n -21 + 6n + nx + -3x = n + -1n Combine like terms: n + -1n = 0 -21 + 6n + nx + -3x = 0 Add '21' to each side of the equation. -21 + 6n + nx + 21 + -3x = 0 + 21 Reorder the terms: -21 + 21 + 6n + nx + -3x = 0 + 21 Combine like terms: -21 + 21 = 0 0 + 6n + nx + -3x = 0 + 21 6n + nx + -3x = 0 + 21 Combine like terms: 0 + 21 = 21 6n + nx + -3x = 21 Add '3x' to each side of the equation. 6n + nx + -3x + 3x = 21 + 3x Combine like terms: -3x + 3x = 0 6n + nx + 0 = 21 + 3x 6n + nx = 21 + 3x Reorder the terms: -21 + 6n + nx + -3x = 21 + 3x + -21 + -3x Reorder the terms: -21 + 6n + nx + -3x = 21 + -21 + 3x + -3x Combine like terms: 21 + -21 = 0 -21 + 6n + nx + -3x = 0 + 3x + -3x -21 + 6n + nx + -3x = 3x + -3x Combine like terms: 3x + -3x = 0 -21 + 6n + nx + -3x = 0 The solution to this equation could not be determined.
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