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