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Simplifying 7x + -9 = 20x + -30 Reorder the terms: -9 + 7x = 20x + -30 Reorder the terms: -9 + 7x = -30 + 20x Solving -9 + 7x = -30 + 20x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-20x' to each side of the equation. -9 + 7x + -20x = -30 + 20x + -20x Combine like terms: 7x + -20x = -13x -9 + -13x = -30 + 20x + -20x Combine like terms: 20x + -20x = 0 -9 + -13x = -30 + 0 -9 + -13x = -30 Add '9' to each side of the equation. -9 + 9 + -13x = -30 + 9 Combine like terms: -9 + 9 = 0 0 + -13x = -30 + 9 -13x = -30 + 9 Combine like terms: -30 + 9 = -21 -13x = -21 Divide each side by '-13'. x = 1.615384615 Simplifying x = 1.615384615
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