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Simplifying 8(x + 2) + -2 = 21 + -4x + -7 + 12x Reorder the terms: 8(2 + x) + -2 = 21 + -4x + -7 + 12x (2 * 8 + x * 8) + -2 = 21 + -4x + -7 + 12x (16 + 8x) + -2 = 21 + -4x + -7 + 12x Reorder the terms: 16 + -2 + 8x = 21 + -4x + -7 + 12x Combine like terms: 16 + -2 = 14 14 + 8x = 21 + -4x + -7 + 12x Reorder the terms: 14 + 8x = 21 + -7 + -4x + 12x Combine like terms: 21 + -7 = 14 14 + 8x = 14 + -4x + 12x Combine like terms: -4x + 12x = 8x 14 + 8x = 14 + 8x Add '-14' to each side of the equation. 14 + -14 + 8x = 14 + -14 + 8x Combine like terms: 14 + -14 = 0 0 + 8x = 14 + -14 + 8x 8x = 14 + -14 + 8x Combine like terms: 14 + -14 = 0 8x = 0 + 8x 8x = 8x Add '-8x' to each side of the equation. 8x + -8x = 8x + -8x Combine like terms: 8x + -8x = 0 0 = 8x + -8x Combine like terms: 8x + -8x = 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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