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Simplifying 2x + 42 = 6(x + 7) + -4x Reorder the terms: 42 + 2x = 6(x + 7) + -4x Reorder the terms: 42 + 2x = 6(7 + x) + -4x 42 + 2x = (7 * 6 + x * 6) + -4x 42 + 2x = (42 + 6x) + -4x Combine like terms: 6x + -4x = 2x 42 + 2x = 42 + 2x Add '-42' to each side of the equation. 42 + -42 + 2x = 42 + -42 + 2x Combine like terms: 42 + -42 = 0 0 + 2x = 42 + -42 + 2x 2x = 42 + -42 + 2x Combine like terms: 42 + -42 = 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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