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Simplifying 2(x + 15) = 2x + 30 Reorder the terms: 2(15 + x) = 2x + 30 (15 * 2 + x * 2) = 2x + 30 (30 + 2x) = 2x + 30 Reorder the terms: 30 + 2x = 30 + 2x Add '-30' to each side of the equation. 30 + -30 + 2x = 30 + -30 + 2x Combine like terms: 30 + -30 = 0 0 + 2x = 30 + -30 + 2x 2x = 30 + -30 + 2x Combine like terms: 30 + -30 = 0 2x = 0 + 2x 2x = 2x Add '-2x' to each side of the equation. 2x + -2x = 2x + -2x Combine like terms: 2x + -2x = 0 0 = 2x + -2x Combine like terms: 2x + -2x = 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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