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Simplifying x + 4(x + 5) = 42 Reorder the terms: x + 4(5 + x) = 42 x + (5 * 4 + x * 4) = 42 x + (20 + 4x) = 42 Reorder the terms: 20 + x + 4x = 42 Combine like terms: x + 4x = 5x 20 + 5x = 42 Solving 20 + 5x = 42 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-20' to each side of the equation. 20 + -20 + 5x = 42 + -20 Combine like terms: 20 + -20 = 0 0 + 5x = 42 + -20 5x = 42 + -20 Combine like terms: 42 + -20 = 22 5x = 22 Divide each side by '5'. x = 4.4 Simplifying x = 4.4
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