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Simplifying 9x + 9 = 7x + 20 Reorder the terms: 9 + 9x = 7x + 20 Reorder the terms: 9 + 9x = 20 + 7x Solving 9 + 9x = 20 + 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 + 9x + -7x = 20 + 7x + -7x Combine like terms: 9x + -7x = 2x 9 + 2x = 20 + 7x + -7x Combine like terms: 7x + -7x = 0 9 + 2x = 20 + 0 9 + 2x = 20 Add '-9' to each side of the equation. 9 + -9 + 2x = 20 + -9 Combine like terms: 9 + -9 = 0 0 + 2x = 20 + -9 2x = 20 + -9 Combine like terms: 20 + -9 = 11 2x = 11 Divide each side by '2'. x = 5.5 Simplifying x = 5.5
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