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Simplifying 2(2x + -1) + 7 = 2(2x) + 5 Reorder the terms: 2(-1 + 2x) + 7 = 2(2x) + 5 (-1 * 2 + 2x * 2) + 7 = 2(2x) + 5 (-2 + 4x) + 7 = 2(2x) + 5 Reorder the terms: -2 + 7 + 4x = 2(2x) + 5 Combine like terms: -2 + 7 = 5 5 + 4x = 2(2x) + 5 Remove parenthesis around (2x) 5 + 4x = 2 * 2x + 5 Multiply 2 * 2 5 + 4x = 4x + 5 Reorder the terms: 5 + 4x = 5 + 4x Add '-5' to each side of the equation. 5 + -5 + 4x = 5 + -5 + 4x Combine like terms: 5 + -5 = 0 0 + 4x = 5 + -5 + 4x 4x = 5 + -5 + 4x Combine like terms: 5 + -5 = 0 4x = 0 + 4x 4x = 4x Add '-4x' to each side of the equation. 4x + -4x = 4x + -4x Combine like terms: 4x + -4x = 0 0 = 4x + -4x Combine like terms: 4x + -4x = 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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