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hello sir ,ROBERT A, now as the ans. of (2*5/2)-(3*1/4)=1

but i did in this way (9/2)-(13/4)
                             (4/4)=1
now another method,
                            (2*5/2) - (3*1/2)
                            (2-3)(5/2)-1/2)
                            (-1)(4/2)
                             (-1*2/2)
My questions both are right, but answer are different the main thing i want to ask that so you know which method should we prefer if yes OR no then reason Why?
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1 Answer

 
   *   this is multiplication sign
 
 
    2 2/5 , not 5/2
 
 5/2 =2 1/2  it is greater one.
 
     2 5/2 - 3 1/2 = 2- 3 + 5/2 - 1/2= -1 +  4/2 =-1  + 2 = 1
 
    2 5/2 should be wrirten  as 4 1/2 from which if you take 3/12 off ,get +1 ( same answer).
 
  This is the way you should write and  do it accordingly . Your method and signs are all wrong.
 
    The way you have written your expressions.
 
( 2 * 5/2) - ( 3 * 1/4) = 5 - 3/4 = 20/4 - 3/4 = 17/4 = 4 1/4