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Simplifying 7 + -2(x + -1) = 31 Reorder the terms: 7 + -2(-1 + x) = 31 7 + (-1 * -2 + x * -2) = 31 7 + (2 + -2x) = 31 Combine like terms: 7 + 2 = 9 9 + -2x = 31 Solving 9 + -2x = 31 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + -2x = 31 + -9 Combine like terms: 9 + -9 = 0 0 + -2x = 31 + -9 -2x = 31 + -9 Combine like terms: 31 + -9 = 22 -2x = 22 Divide each side by '-2'. x = -11 Simplifying x = -11
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