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Simplifying 4.2 + 4(4.2) + 2 = 23 Multiply 4 * 4.2 4.2 + 16.8 + 2 = 23 Combine like terms: 4.2 + 16.8 = 21 21 + 2 = 23 Combine like terms: 21 + 2 = 23 23 = 23 Add '-23' to each side of the equation. 23 + -23 = 23 + -23 Combine like terms: 23 + -23 = 0 0 = 23 + -23 Combine like terms: 23 + -23 = 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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