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Simplifying 2x + 4(2x + 3) = 42 Reorder the terms: 2x + 4(3 + 2x) = 42 2x + (3 * 4 + 2x * 4) = 42 2x + (12 + 8x) = 42 Reorder the terms: 12 + 2x + 8x = 42 Combine like terms: 2x + 8x = 10x 12 + 10x = 42 Solving 12 + 10x = 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 + 10x = 42 + -12 Combine like terms: 12 + -12 = 0 0 + 10x = 42 + -12 10x = 42 + -12 Combine like terms: 42 + -12 = 30 10x = 30 Divide each side by '10'. x = 3 Simplifying x = 3
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