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Simplifying -4 + -7n = -8(1 + 8n) + 4 -4 + -7n = (1 * -8 + 8n * -8) + 4 -4 + -7n = (-8 + -64n) + 4 Reorder the terms: -4 + -7n = -8 + 4 + -64n Combine like terms: -8 + 4 = -4 -4 + -7n = -4 + -64n Add '4' to each side of the equation. -4 + 4 + -7n = -4 + 4 + -64n Combine like terms: -4 + 4 = 0 0 + -7n = -4 + 4 + -64n -7n = -4 + 4 + -64n Combine like terms: -4 + 4 = 0 -7n = 0 + -64n -7n = -64n Solving -7n = -64n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '64n' to each side of the equation. -7n + 64n = -64n + 64n Combine like terms: -7n + 64n = 57n 57n = -64n + 64n Combine like terms: -64n + 64n = 0 57n = 0 Divide each side by '57'. n = 0 Simplifying n = 0
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