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Simplifying 6x + -1(2x + -1) = 9x + 2(2x) Reorder the terms: 6x + -1(-1 + 2x) = 9x + 2(2x) 6x + (-1 * -1 + 2x * -1) = 9x + 2(2x) 6x + (1 + -2x) = 9x + 2(2x) Reorder the terms: 1 + 6x + -2x = 9x + 2(2x) Combine like terms: 6x + -2x = 4x 1 + 4x = 9x + 2(2x) Remove parenthesis around (2x) 1 + 4x = 9x + 2 * 2x Multiply 2 * 2 1 + 4x = 9x + 4x Combine like terms: 9x + 4x = 13x 1 + 4x = 13x Solving 1 + 4x = 13x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-13x' to each side of the equation. 1 + 4x + -13x = 13x + -13x Combine like terms: 4x + -13x = -9x 1 + -9x = 13x + -13x Combine like terms: 13x + -13x = 0 1 + -9x = 0 Add '-1' to each side of the equation. 1 + -1 + -9x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -9x = 0 + -1 -9x = 0 + -1 Combine like terms: 0 + -1 = -1 -9x = -1 Divide each side by '-9'. x = 0.1111111111 Simplifying x = 0.1111111111
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