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Simplifying 7(x + -1) = 2(x + -1) Reorder the terms: 7(-1 + x) = 2(x + -1) (-1 * 7 + x * 7) = 2(x + -1) (-7 + 7x) = 2(x + -1) Reorder the terms: -7 + 7x = 2(-1 + x) -7 + 7x = (-1 * 2 + x * 2) -7 + 7x = (-2 + 2x) Solving -7 + 7x = -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 + 7x + -2x = -2 + 2x + -2x Combine like terms: 7x + -2x = 5x -7 + 5x = -2 + 2x + -2x Combine like terms: 2x + -2x = 0 -7 + 5x = -2 + 0 -7 + 5x = -2 Add '7' to each side of the equation. -7 + 7 + 5x = -2 + 7 Combine like terms: -7 + 7 = 0 0 + 5x = -2 + 7 5x = -2 + 7 Combine like terms: -2 + 7 = 5 5x = 5 Divide each side by '5'. x = 1 Simplifying x = 1
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