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Simplifying 7x + 20 = 3x + 30 Reorder the terms: 20 + 7x = 3x + 30 Reorder the terms: 20 + 7x = 30 + 3x Solving 20 + 7x = 30 + 3x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3x' to each side of the equation. 20 + 7x + -3x = 30 + 3x + -3x Combine like terms: 7x + -3x = 4x 20 + 4x = 30 + 3x + -3x Combine like terms: 3x + -3x = 0 20 + 4x = 30 + 0 20 + 4x = 30 Add '-20' to each side of the equation. 20 + -20 + 4x = 30 + -20 Combine like terms: 20 + -20 = 0 0 + 4x = 30 + -20 4x = 30 + -20 Combine like terms: 30 + -20 = 10 4x = 10 Divide each side by '4'. x = 2.5 Simplifying x = 2.5
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