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Simplifying 3(2 * 7.5 + -1) = 42 Multiply 2 * 7.5 3(15 + -1) = 42 Combine like terms: 15 + -1 = 14 3(14) = 42 Multiply 3 * 14 42 = 42 Add '-42' to each side of the equation. 42 + -42 = 42 + -42 Combine like terms: 42 + -42 = 0 0 = 42 + -42 Combine like terms: 42 + -42 = 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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