Simplifying 5(6 + -4x) = 25 (6 * 5 + -4x * 5) = 25 (30 + -20x) = 25 Solving 30 + -20x = 25 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-30' to each side of the equation. 30 + -30 + -20x = 25 + -30 Combine like terms: 30 + -30 = 0 0 + -20x = 25 + -30 -20x = 25 + -30 Combine like terms: 25 + -30 = -5 -20x = -5 Divide each side by '-20'. x = 0.25