Multiple Choice Question (MCQ)

If \dfrac{x-1}{3}=k and k=3, what is the value of x?

  1. ×

    7

  2. ×

    8

  3. ×

    9

  4. 10

Collected in the board: Linear Equations

Steven Zheng posted 2 weeks ago


Answer

  1. Since k =3, we can substitute k for 3 in the equation,

    \dfrac{x-1}{3}=3

    Multiply both sides by 3 to remove the denominator of the fraction

    \dfrac{x-1}{3}\cdotp 3 =3\cdotp 3

    x-1=9

    Adding 1 to both sides gives the final result

    x=10

    Choice C is correct

Steven Zheng posted 2 weeks ago

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