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Simplifying 50 * 1(30 + -1(-50)) = 4000 Multiply -1 * -50 50 * 1(30 + 50) = 4000 Combine like terms: 30 + 50 = 80 50 * 1(80) = 4000 Multiply 50 * 1 50 * 80 = 4000 Multiply 50 * 80 4000 = 4000 Add '-4000' to each side of the equation. 4000 + -4000 = 4000 + -4000 Combine like terms: 4000 + -4000 = 0 0 = 4000 + -4000 Combine like terms: 4000 + -4000 = 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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