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Simplifying -7 + x = 2(1 + -1x) -7 + x = (1 * 2 + -1x * 2) -7 + x = (2 + -2x) Solving -7 + x = 2 + -2x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2x' to each side of the equation. -7 + x + 2x = 2 + -2x + 2x Combine like terms: x + 2x = 3x -7 + 3x = 2 + -2x + 2x Combine like terms: -2x + 2x = 0 -7 + 3x = 2 + 0 -7 + 3x = 2 Add '7' to each side of the equation. -7 + 7 + 3x = 2 + 7 Combine like terms: -7 + 7 = 0 0 + 3x = 2 + 7 3x = 2 + 7 Combine like terms: 2 + 7 = 9 3x = 9 Divide each side by '3'. x = 3 Simplifying x = 3
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