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Simplifying 3x + 2(x + -4) = 42 Reorder the terms: 3x + 2(-4 + x) = 42 3x + (-4 * 2 + x * 2) = 42 3x + (-8 + 2x) = 42 Reorder the terms: -8 + 3x + 2x = 42 Combine like terms: 3x + 2x = 5x -8 + 5x = 42 Solving -8 + 5x = 42 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + 5x = 42 + 8 Combine like terms: -8 + 8 = 0 0 + 5x = 42 + 8 5x = 42 + 8 Combine like terms: 42 + 8 = 50 5x = 50 Divide each side by '5'. x = 10 Simplifying x = 10
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