Question

What should be subtracted from (3/4+1/3+2/5)to get 1/2.

Answer 1

Let the number be x so,
(3/4+1/3+2/5)-x=1/2
after LCM method
[(45+20+24)/60)]-x=1/2
(89/60)-x=1/2
x=89/60-1/2
x=(178+60)/120
x=118/120
x=59/60
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Answer 2

(3/4+1/3+2/5)-1/2
take LCM OF 4,3,5=2*2*5*3=60
3*15+1*20+2*12          1
----------------------    -   -----   =   89-1*30
           60                      2         ------------
                                                     60
89-30  =59
--------   -------   =SHOULD BE SUBTRACTED FROM THE GIVEN CONDITION TO GET 1/2
   60        60





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