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Simplifying 9x + -1(7x + -1) = 2 Reorder the terms: 9x + -1(-1 + 7x) = 2 9x + (-1 * -1 + 7x * -1) = 2 9x + (1 + -7x) = 2 Reorder the terms: 1 + 9x + -7x = 2 Combine like terms: 9x + -7x = 2x 1 + 2x = 2 Solving 1 + 2x = 2 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + 2x = 2 + -1 Combine like terms: 1 + -1 = 0 0 + 2x = 2 + -1 2x = 2 + -1 Combine like terms: 2 + -1 = 1 2x = 1 Divide each side by '2'. x = 0.5 Simplifying x = 0.5
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