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Simplifying 8 + 7x = 3x + 20 Reorder the terms: 8 + 7x = 20 + 3x Solving 8 + 7x = 20 + 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. 8 + 7x + -3x = 20 + 3x + -3x Combine like terms: 7x + -3x = 4x 8 + 4x = 20 + 3x + -3x Combine like terms: 3x + -3x = 0 8 + 4x = 20 + 0 8 + 4x = 20 Add '-8' to each side of the equation. 8 + -8 + 4x = 20 + -8 Combine like terms: 8 + -8 = 0 0 + 4x = 20 + -8 4x = 20 + -8 Combine like terms: 20 + -8 = 12 4x = 12 Divide each side by '4'. x = 3 Simplifying x = 3
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