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