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Simplifying 20x + -9 = 13x + -7 Reorder the terms: -9 + 20x = 13x + -7 Reorder the terms: -9 + 20x = -7 + 13x Solving -9 + 20x = -7 + 13x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-13x' to each side of the equation. -9 + 20x + -13x = -7 + 13x + -13x Combine like terms: 20x + -13x = 7x -9 + 7x = -7 + 13x + -13x Combine like terms: 13x + -13x = 0 -9 + 7x = -7 + 0 -9 + 7x = -7 Add '9' to each side of the equation. -9 + 9 + 7x = -7 + 9 Combine like terms: -9 + 9 = 0 0 + 7x = -7 + 9 7x = -7 + 9 Combine like terms: -7 + 9 = 2 7x = 2 Divide each side by '7'. x = 0.2857142857 Simplifying x = 0.2857142857
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