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Simplifying 3 + 2a + 1 = 2(a + 2) Reorder the terms: 3 + 1 + 2a = 2(a + 2) Combine like terms: 3 + 1 = 4 4 + 2a = 2(a + 2) Reorder the terms: 4 + 2a = 2(2 + a) 4 + 2a = (2 * 2 + a * 2) 4 + 2a = (4 + 2a) Add '-4' to each side of the equation. 4 + -4 + 2a = 4 + -4 + 2a Combine like terms: 4 + -4 = 0 0 + 2a = 4 + -4 + 2a 2a = 4 + -4 + 2a Combine like terms: 4 + -4 = 0 2a = 0 + 2a 2a = 2a Add '-2a' to each side of the equation. 2a + -2a = 2a + -2a Combine like terms: 2a + -2a = 0 0 = 2a + -2a Combine like terms: 2a + -2a = 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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