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7th Class Mathematics Simple Equations Question Bank Simple Equation

  • question_answer
    5 less than thrice a number and add 7. The result is 14. The number is _____.     

    A)  5                                

    B)         4                    

    C)         6                                

    D)         2                    

    Correct Answer: B

    Solution :

    Let the number be x. According to question, \[(3x-5)+7=14\] \[\Rightarrow \] \[3x+2=14\Rightarrow 3x=14-2\Rightarrow 3x=12\] \[\Rightarrow \] \[x=\frac{12}{3}=4\]


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