ayudenme: 1) ( 9/3 - 1/4 - 1/8 - 1/16) x 8 2) ( 1/3 - 1/5 ) x ( 1/60 + 10/25 ) x 5 4/15

1)  mcm = 48 (((9*16)+(1*12)+(1*6)+(1*3))/48)*8 (144+12+6+3)/48*8 (165/6)=55/2 2)  mcm  =  15, 300 (((1*5)-(1*3))/15)*(((1*5)+(10*12))/300)*79/15 ((5-3)/15)*((5+120)/300)*79/15 (2/15)*(5/12)*(79/15) 79/270