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Simplifying 3x + 20 = 2(x + 10) + x Reorder the terms: 20 + 3x = 2(x + 10) + x Reorder the terms: 20 + 3x = 2(10 + x) + x 20 + 3x = (10 * 2 + x * 2) + x 20 + 3x = (20 + 2x) + x Combine like terms: 2x + x = 3x 20 + 3x = 20 + 3x Add '-20' to each side of the equation. 20 + -20 + 3x = 20 + -20 + 3x Combine like terms: 20 + -20 = 0 0 + 3x = 20 + -20 + 3x 3x = 20 + -20 + 3x Combine like terms: 20 + -20 = 0 3x = 0 + 3x 3x = 3x Add '-3x' to each side of the equation. 3x + -3x = 3x + -3x Combine like terms: 3x + -3x = 0 0 = 3x + -3x Combine like terms: 3x + -3x = 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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