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Simplifying 42x + -12 = 30x + 18 Reorder the terms: -12 + 42x = 30x + 18 Reorder the terms: -12 + 42x = 18 + 30x Solving -12 + 42x = 18 + 30x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-30x' to each side of the equation. -12 + 42x + -30x = 18 + 30x + -30x Combine like terms: 42x + -30x = 12x -12 + 12x = 18 + 30x + -30x Combine like terms: 30x + -30x = 0 -12 + 12x = 18 + 0 -12 + 12x = 18 Add '12' to each side of the equation. -12 + 12 + 12x = 18 + 12 Combine like terms: -12 + 12 = 0 0 + 12x = 18 + 12 12x = 18 + 12 Combine like terms: 18 + 12 = 30 12x = 30 Divide each side by '12'. x = 2.5 Simplifying x = 2.5
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