12/35*21/15=(4*3)/(5*5)=12/25
(25*17*44)/(51*8*75)=(11)/(3*2*3)=11/18
17*48/(17*16-9*16)= (17*48)/ 16*(17-9)=(17*3)/(17-9)=51/8=6 3/8
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12/35*21/15=(4*3)/(5*5)=12/25
(25*17*44)/(51*8*75)=(11)/(3*2*3)=11/18
17*48/(17*16-9*16)= (17*48)/ 16*(17-9)=(17*3)/(17-9)=51/8=6 3/8