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Simplifying 14x + 21 = 7(2x + 3) Reorder the terms: 21 + 14x = 7(2x + 3) Reorder the terms: 21 + 14x = 7(3 + 2x) 21 + 14x = (3 * 7 + 2x * 7) 21 + 14x = (21 + 14x) Add '-21' to each side of the equation. 21 + -21 + 14x = 21 + -21 + 14x Combine like terms: 21 + -21 = 0 0 + 14x = 21 + -21 + 14x 14x = 21 + -21 + 14x Combine like terms: 21 + -21 = 0 14x = 0 + 14x 14x = 14x Add '-14x' to each side of the equation. 14x + -14x = 14x + -14x Combine like terms: 14x + -14x = 0 0 = 14x + -14x Combine like terms: 14x + -14x = 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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