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Simplifying 2x + 9 = 8x + -1x Reorder the terms: 9 + 2x = 8x + -1x Combine like terms: 8x + -1x = 7x 9 + 2x = 7x Solving 9 + 2x = 7x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7x' to each side of the equation. 9 + 2x + -7x = 7x + -7x Combine like terms: 2x + -7x = -5x 9 + -5x = 7x + -7x Combine like terms: 7x + -7x = 0 9 + -5x = 0 Add '-9' to each side of the equation. 9 + -9 + -5x = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -5x = 0 + -9 -5x = 0 + -9 Combine like terms: 0 + -9 = -9 -5x = -9 Divide each side by '-5'. x = 1.8 Simplifying x = 1.8
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