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Simplifying -20 = 5(n + -2) + -5(n + 2) Reorder the terms: -20 = 5(-2 + n) + -5(n + 2) -20 = (-2 * 5 + n * 5) + -5(n + 2) -20 = (-10 + 5n) + -5(n + 2) Reorder the terms: -20 = -10 + 5n + -5(2 + n) -20 = -10 + 5n + (2 * -5 + n * -5) -20 = -10 + 5n + (-10 + -5n) Reorder the terms: -20 = -10 + -10 + 5n + -5n Combine like terms: -10 + -10 = -20 -20 = -20 + 5n + -5n Combine like terms: 5n + -5n = 0 -20 = -20 + 0 -20 = -20 Add '20' to each side of the equation. -20 + 20 = -20 + 20 Combine like terms: -20 + 20 = 0 0 = -20 + 20 Combine like terms: -20 + 20 = 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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