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Simplifying 4(8 + -4(-5x + -3)) = 80x + 80 Reorder the terms: 4(8 + -4(-3 + -5x)) = 80x + 80 4(8 + (-3 * -4 + -5x * -4)) = 80x + 80 4(8 + (12 + 20x)) = 80x + 80 Combine like terms: 8 + 12 = 20 4(20 + 20x) = 80x + 80 (20 * 4 + 20x * 4) = 80x + 80 (80 + 80x) = 80x + 80 Reorder the terms: 80 + 80x = 80 + 80x Add '-80' to each side of the equation. 80 + -80 + 80x = 80 + -80 + 80x Combine like terms: 80 + -80 = 0 0 + 80x = 80 + -80 + 80x 80x = 80 + -80 + 80x Combine like terms: 80 + -80 = 0 80x = 0 + 80x 80x = 80x Add '-80x' to each side of the equation. 80x + -80x = 80x + -80x Combine like terms: 80x + -80x = 0 0 = 80x + -80x Combine like terms: 80x + -80x = 0 0 = 0 Solving 0 = 0 Couldn't find a variable to solve for. This equation is an identity, all real numbers are solutions.
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