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Simplifying 75 = 15x Solving 75 = 15x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-15x' to each side of the equation. 75 + -15x = 15x + -15x Combine like terms: 15x + -15x = 0 75 + -15x = 0 Add '-75' to each side of the equation. 75 + -75 + -15x = 0 + -75 Combine like terms: 75 + -75 = 0 0 + -15x = 0 + -75 -15x = 0 + -75 Combine like terms: 0 + -75 = -75 -15x = -75 Divide each side by '-15'. x = 5 Simplifying x = 5

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