Chapter 20: Solving Equations and Simultaneous Equations > EASY QUESTIONS (Questions 1-7)EASY QUESTIONS (Questions 1-7)Previous Question 1 of 71 / 7NextReveal all steps To solve for x, subtract 7 from both sides. x + 7 = 15 x + 7 - 7 = 15 - 7 x = 8 Check: 8 + 7 = 15 ✓ Therefore, x = 8. To solve for x, divide both sides by 4. 4x = 28 4x ÷ 4 = 28 ÷ 4 x = 7 Check: 4 × 7 = 28 ✓ Therefore, x = 7. To solve for x, add 9 to both sides. x - 9 = 14 x - 9 + 9 = 14 + 9 x = 23 Check: 23 - 9 = 14 ✓ Therefore, x = 23. To solve for x, multiply both sides by 5. x/5 = 6 x/5 × 5 = 6 × 5 x = 30 Check: 30 ÷ 5 = 6 ✓ Therefore, x = 30. Step 1: Subtract 5 from both sides. 2x + 5 = 17 2x + 5 - 5 = 17 - 5 2x = 12 Step 2: Divide both sides by 2. 2x ÷ 2 = 12 ÷ 2 x = 6 Check: 2(6) + 5 = 12 + 5 = 17 ✓ Therefore, x = 6. Step 1: Add 4 to both sides. 3x - 4 = 14 3x - 4 + 4 = 14 + 4 3x = 18 Step 2: Divide both sides by 3. 3x ÷ 3 = 18 ÷ 3 x = 6 Check: 3(6) - 4 = 18 - 4 = 14 ✓ Therefore, x = 6. Step 1: Collect x terms on one side. Subtract 3x from both sides. 5x + 3 = 3x + 11 5x - 3x + 3 = 3x - 3x + 11 2x + 3 = 11 Step 2: Subtract 3 from both sides. 2x + 3 - 3 = 11 - 3 2x = 8 Step 3: Divide both sides by 2. x = 4 Check: LHS = 5(4) + 3 = 23, RHS = 3(4) + 11 = 23 ✓ Therefore, x = 4.
