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Simplifying 3x + 4x + 12 = 47 Reorder the terms: 12 + 3x + 4x = 47 Combine like terms: 3x + 4x = 7x 12 + 7x = 47 Solving 12 + 7x = 47 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + 7x = 47 + -12 Combine like terms: 12 + -12 = 0 0 + 7x = 47 + -12 7x = 47 + -12 Combine like terms: 47 + -12 = 35 7x = 35 Divide each side by '7'. x = 5 Simplifying x = 5
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