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Simplifying 7x + -15 = 2x + 30 Reorder the terms: -15 + 7x = 2x + 30 Reorder the terms: -15 + 7x = 30 + 2x Solving -15 + 7x = 30 + 2x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2x' to each side of the equation. -15 + 7x + -2x = 30 + 2x + -2x Combine like terms: 7x + -2x = 5x -15 + 5x = 30 + 2x + -2x Combine like terms: 2x + -2x = 0 -15 + 5x = 30 + 0 -15 + 5x = 30 Add '15' to each side of the equation. -15 + 15 + 5x = 30 + 15 Combine like terms: -15 + 15 = 0 0 + 5x = 30 + 15 5x = 30 + 15 Combine like terms: 30 + 15 = 45 5x = 45 Divide each side by '5'. x = 9 Simplifying x = 9
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