. than five times the numb er equals the pro duct of 10 and x. 5x – 15 = 10 x The equation is 5x – 15 = 10 x Subtract 5x from both sides: 5x – 5x – 15 = 10 x – 5x Divide both sides by 5: –3 = x It is. For example, take the compound inequality –3 Ͻ x + 1 Ͻ 4. To solve this, subtract 1 from all parts of the inequality. –3 – 1 Ͻ x + 1 – 1 Ͻ 4 – 1. Simplify. –4 Ͻ x Ͻ 3. Therefore, the solution set. 3x – 5 = 10 Add 5 to both sides of the equation: 3x – 5 + 5 = 10 + 5 Divide both sides by 3: x = 5 b. 3 (x – 1) + x = 1 Use distributive property to remove parentheses: 3x – 3 + x = 1 Combine