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Simplifying 21x2 = x + 2 Reorder the terms: 21x2 = 2 + x Solving 21x2 = 2 + x Solving for variable 'x'. Reorder the terms: -2 + -1x + 21x2 = 2 + x + -2 + -1x Reorder the terms: -2 + -1x + 21x2 = 2 + -2 + x + -1x Combine like terms: 2 + -2 = 0 -2 + -1x + 21x2 = 0 + x + -1x -2 + -1x + 21x2 = x + -1x Combine like terms: x + -1x = 0 -2 + -1x + 21x2 = 0 Factor a trinomial. (-2 + -7x)(1 + -3x) = 0Subproblem 1
Set the factor '(-2 + -7x)' equal to zero and attempt to solve: Simplifying -2 + -7x = 0 Solving -2 + -7x = 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 + -7x = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -7x = 0 + 2 -7x = 0 + 2 Combine like terms: 0 + 2 = 2 -7x = 2 Divide each side by '-7'. x = -0.2857142857 Simplifying x = -0.2857142857Subproblem 2
Set the factor '(1 + -3x)' equal to zero and attempt to solve: Simplifying 1 + -3x = 0 Solving 1 + -3x = 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 + -3x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -3x = 0 + -1 -3x = 0 + -1 Combine like terms: 0 + -1 = -1 -3x = -1 Divide each side by '-3'. x = 0.3333333333 Simplifying x = 0.3333333333Solution
x = {-0.2857142857, 0.3333333333}
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