Using Multiplicative Inverse To Solve Equations

5 Questions | Total Attempts: 94

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Equation Quizzes & Trivia

When we talk about multiplicative inverse in mathematics, we are in other words talking about using a reciprocal for a number x which results in 1 when multiplied by the number x. Pretty confusing right? Well, with enough practice it is super easy and we look at how to go about it in solving mathematical equations.


Questions and Answers
  • 1. 
    Solve the following:6/15 x = 60
    • A. 

      X = 5400

    • B. 

      X = 24

    • C. 

      X = 2/3

    • D. 

      X = 150

  • 2. 
    Solve the following:12/30 x  = -27
    • A. 

      X = 67.5

    • B. 

      X = 9720

    • C. 

      X = -67.5

    • D. 

      X = -10.8

  • 3. 
    Solve the following:4/15 x + 8/20  = 23/60
    • A. 

      X = 1/16

    • B. 

      X = - 1/16

    • C. 

      X = 1 13/32

    • D. 

      X = 31/300

  • 4. 
    Solve the following:-57/63x - 8/9 = 1/7