issb mathematics MCQ #522

If 3x + 6 = 21, then x equals?

issb mathematics MCQ #522

  1. Question 1

    Q1. If 3x + 6 = 21, then x equals?

    • A) 4
    • B) 5
    • C) 6
    • D) 7

    Answer: 5

    Explanation: Subtract 6 to get 3x equals 15 so x is 5. Apply the same method to similar ISSB quantitative items.