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Simplifying 4x + -9x(x + 1) = 20 + -5x Reorder the terms: 4x + -9x(1 + x) = 20 + -5x 4x + (1 * -9x + x * -9x) = 20 + -5x 4x + (-9x + -9x2) = 20 + -5x Combine like terms: 4x + -9x = -5x -5x + -9x2 = 20 + -5x Add '5x' to each side of the equation. -5x + 5x + -9x2 = 20 + -5x + 5x Combine like terms: -5x + 5x = 0 0 + -9x2 = 20 + -5x + 5x -9x2 = 20 + -5x + 5x Combine like terms: -5x + 5x = 0 -9x2 = 20 + 0 -9x2 = 20 Solving -9x2 = 20 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Divide each side by '-9'. x2 = -2.222222222 Simplifying x2 = -2.222222222 Reorder the terms: 2.222222222 + x2 = -2.222222222 + 2.222222222 Combine like terms: -2.222222222 + 2.222222222 = 0.000000000 2.222222222 + x2 = 0.000000000 The solution to this equation could not be determined.
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