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Simplifying 30 + 2x = 15 + 7x Solving 30 + 2x = 15 + 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. 30 + 2x + -7x = 15 + 7x + -7x Combine like terms: 2x + -7x = -5x 30 + -5x = 15 + 7x + -7x Combine like terms: 7x + -7x = 0 30 + -5x = 15 + 0 30 + -5x = 15 Add '-30' to each side of the equation. 30 + -30 + -5x = 15 + -30 Combine like terms: 30 + -30 = 0 0 + -5x = 15 + -30 -5x = 15 + -30 Combine like terms: 15 + -30 = -15 -5x = -15 Divide each side by '-5'. x = 3 Simplifying x = 3
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