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Simplifying 3 * 30 + (42x) + 195 = 390 Multiply 3 * 30 90 + (42x) + 195 = 390 Reorder the terms: 90 + 195 + (42x) = 390 Combine like terms: 90 + 195 = 285 285 + (42x) = 390 Solving 285 + (42x) = 390 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-285' to each side of the equation. 285 + -285 + (42x) = 390 + -285 Combine like terms: 285 + -285 = 0 0 + (42x) = 390 + -285 (42x) = 390 + -285 Combine like terms: 390 + -285 = 105 (42x) = 105 Divide each side by '42'. x = 2.5 Simplifying x = 2.5
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