Solve for x: 9x + 15 = 96.
Answer and explanation
Correct answer: D. 9
- Step 1: Subtract 15 from both sides: 9x = 81. Step 2. Divide both sides by 9: x = 9. Answer: 9. Why not the others: 81: Subtracting 15 gives 81, but that still has to be divided by 9. 111: The 15 must be subtracted from both sides, not added. 10: That is one more than the value that satisfies the equation.
Practise more Linear equations.
Free questions with an explanation for every one, and full timed Kenya KCSE mock tests.