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Simplifying 3 + -1(2 + -7x) = 8x + -1(x + -1) 3 + (2 * -1 + -7x * -1) = 8x + -1(x + -1) 3 + (-2 + 7x) = 8x + -1(x + -1) Combine like terms: 3 + -2 = 1 1 + 7x = 8x + -1(x + -1) Reorder the terms: 1 + 7x = 8x + -1(-1 + x) 1 + 7x = 8x + (-1 * -1 + x * -1) 1 + 7x = 8x + (1 + -1x) Reorder the terms: 1 + 7x = 1 + 8x + -1x Combine like terms: 8x + -1x = 7x 1 + 7x = 1 + 7x Add '-1' to each side of the equation. 1 + -1 + 7x = 1 + -1 + 7x Combine like terms: 1 + -1 = 0 0 + 7x = 1 + -1 + 7x 7x = 1 + -1 + 7x Combine like terms: 1 + -1 = 0 7x = 0 + 7x 7x = 7x Add '-7x' to each side of the equation. 7x + -7x = 7x + -7x Combine like terms: 7x + -7x = 0 0 = 7x + -7x Combine like terms: 7x + -7x = 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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