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Simplifying -4(2n + -5) = -8n + 20 Reorder the terms: -4(-5 + 2n) = -8n + 20 (-5 * -4 + 2n * -4) = -8n + 20 (20 + -8n) = -8n + 20 Reorder the terms: 20 + -8n = 20 + -8n Add '-20' to each side of the equation. 20 + -20 + -8n = 20 + -20 + -8n Combine like terms: 20 + -20 = 0 0 + -8n = 20 + -20 + -8n -8n = 20 + -20 + -8n Combine like terms: 20 + -20 = 0 -8n = 0 + -8n -8n = -8n Add '8n' to each side of the equation. -8n + 8n = -8n + 8n Combine like terms: -8n + 8n = 0 0 = -8n + 8n Combine like terms: -8n + 8n = 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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