Question

(?/21)×(?/189)=1 solve
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Answer 1

Answer:Rearrange:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

                    (x/21)*(x/189)-(1)=0  

Step by step solution :

STEP

1

:

            x  

Simplify   ———

           189

Equation at the end of step

1

:

   x    x      

 (—— • ———) -  1  = 0  

  21   189      

STEP

2

:

            x

Simplify   ——

           21

Equation at the end of step

2

:

   x    x      

 (—— • ———) -  1  = 0  

  21   189    

Step-by-step explanation:

Answer 2

Answer:

63 or - 63

Step-by-step explanation:

Let the question mark be x

$\frac{x}{21} \times \frac{x}{189} = 1$

${x}^{2} = 3969$

Taking square root on both sides

$\sqrt{ {x}^{2} } = \sqrt{3969}$

$x = 63$

Or

$x = - 63$