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Simplifying -5(-4) + (-1) = 19 Multiply -5 * -4 20 + (-1) = 19 20 + -1 = 19 Combine like terms: 20 + -1 = 19 19 = 19 Add '-19' to each side of the equation. 19 + -19 = 19 + -19 Combine like terms: 19 + -19 = 0 0 = 19 + -19 Combine like terms: 19 + -19 = 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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