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Simplifying 7(6x + 2) + 9 = 42x + 23 Reorder the terms: 7(2 + 6x) + 9 = 42x + 23 (2 * 7 + 6x * 7) + 9 = 42x + 23 (14 + 42x) + 9 = 42x + 23 Reorder the terms: 14 + 9 + 42x = 42x + 23 Combine like terms: 14 + 9 = 23 23 + 42x = 42x + 23 Reorder the terms: 23 + 42x = 23 + 42x Add '-23' to each side of the equation. 23 + -23 + 42x = 23 + -23 + 42x Combine like terms: 23 + -23 = 0 0 + 42x = 23 + -23 + 42x 42x = 23 + -23 + 42x Combine like terms: 23 + -23 = 0 42x = 0 + 42x 42x = 42x Add '-42x' to each side of the equation. 42x + -42x = 42x + -42x Combine like terms: 42x + -42x = 0 0 = 42x + -42x Combine like terms: 42x + -42x = 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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