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Simplifying 15(-42x + 40) = 159 Reorder the terms: 15(40 + -42x) = 159 (40 * 15 + -42x * 15) = 159 (600 + -630x) = 159 Solving 600 + -630x = 159 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-600' to each side of the equation. 600 + -600 + -630x = 159 + -600 Combine like terms: 600 + -600 = 0 0 + -630x = 159 + -600 -630x = 159 + -600 Combine like terms: 159 + -600 = -441 -630x = -441 Divide each side by '-630'. x = 0.7 Simplifying x = 0.7
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