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Simplifying 2x + 3(x + 4) = 42 Reorder the terms: 2x + 3(4 + x) = 42 2x + (4 * 3 + x * 3) = 42 2x + (12 + 3x) = 42 Reorder the terms: 12 + 2x + 3x = 42 Combine like terms: 2x + 3x = 5x 12 + 5x = 42 Solving 12 + 5x = 42 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 + 5x = 42 + -12 Combine like terms: 12 + -12 = 0 0 + 5x = 42 + -12 5x = 42 + -12 Combine like terms: 42 + -12 = 30 5x = 30 Divide each side by '5'. x = 6 Simplifying x = 6
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