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Simplifying 7(1 + -1x) = (2x + 3)(1 + -1x) (1 * 7 + -1x * 7) = (2x + 3)(1 + -1x) (7 + -7x) = (2x + 3)(1 + -1x) Reorder the terms: 7 + -7x = (3 + 2x)(1 + -1x) Multiply (3 + 2x) * (1 + -1x) 7 + -7x = (3(1 + -1x) + 2x * (1 + -1x)) 7 + -7x = ((1 * 3 + -1x * 3) + 2x * (1 + -1x)) 7 + -7x = ((3 + -3x) + 2x * (1 + -1x)) 7 + -7x = (3 + -3x + (1 * 2x + -1x * 2x)) 7 + -7x = (3 + -3x + (2x + -2x2)) Combine like terms: -3x + 2x = -1x 7 + -7x = (3 + -1x + -2x2) Solving 7 + -7x = 3 + -1x + -2x2 Solving for variable 'x'. Reorder the terms: 7 + -3 + -7x + x + 2x2 = 3 + -1x + -2x2 + -3 + x + 2x2 Combine like terms: 7 + -3 = 4 4 + -7x + x + 2x2 = 3 + -1x + -2x2 + -3 + x + 2x2 Combine like terms: -7x + x = -6x 4 + -6x + 2x2 = 3 + -1x + -2x2 + -3 + x + 2x2 Reorder the terms: 4 + -6x + 2x2 = 3 + -3 + -1x + x + -2x2 + 2x2 Combine like terms: 3 + -3 = 0 4 + -6x + 2x2 = 0 + -1x + x + -2x2 + 2x2 4 + -6x + 2x2 = -1x + x + -2x2 + 2x2 Combine like terms: -1x + x = 0 4 + -6x + 2x2 = 0 + -2x2 + 2x2 4 + -6x + 2x2 = -2x2 + 2x2 Combine like terms: -2x2 + 2x2 = 0 4 + -6x + 2x2 = 0 Factor out the Greatest Common Factor (GCF), '2'. 2(2 + -3x + x2) = 0 Factor a trinomial. 2((1 + -1x)(2 + -1x)) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(1 + -1x)' equal to zero and attempt to solve: Simplifying 1 + -1x = 0 Solving 1 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + -1x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -1x = 0 + -1 -1x = 0 + -1 Combine like terms: 0 + -1 = -1 -1x = -1 Divide each side by '-1'. x = 1 Simplifying x = 1Subproblem 2
Set the factor '(2 + -1x)' equal to zero and attempt to solve: Simplifying 2 + -1x = 0 Solving 2 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1x = 0 + -2 -1x = 0 + -2 Combine like terms: 0 + -2 = -2 -1x = -2 Divide each side by '-1'. x = 2 Simplifying x = 2Solution
x = {1, 2}
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