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Simplifying 5x + 15 = 155 + -2x Reorder the terms: 15 + 5x = 155 + -2x Solving 15 + 5x = 155 + -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 + 5x + 2x = 155 + -2x + 2x Combine like terms: 5x + 2x = 7x 15 + 7x = 155 + -2x + 2x Combine like terms: -2x + 2x = 0 15 + 7x = 155 + 0 15 + 7x = 155 Add '-15' to each side of the equation. 15 + -15 + 7x = 155 + -15 Combine like terms: 15 + -15 = 0 0 + 7x = 155 + -15 7x = 155 + -15 Combine like terms: 155 + -15 = 140 7x = 140 Divide each side by '7'. x = 20 Simplifying x = 20
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