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Simplifying 4 + -8n = -4 + -1(8n + -8) Reorder the terms: 4 + -8n = -4 + -1(-8 + 8n) 4 + -8n = -4 + (-8 * -1 + 8n * -1) 4 + -8n = -4 + (8 + -8n) Combine like terms: -4 + 8 = 4 4 + -8n = 4 + -8n Add '-4' to each side of the equation. 4 + -4 + -8n = 4 + -4 + -8n Combine like terms: 4 + -4 = 0 0 + -8n = 4 + -4 + -8n -8n = 4 + -4 + -8n Combine like terms: 4 + -4 = 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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