№2
a) (5*4*9*5)/(16*5*25*9) = (1*1*1*1)/(4*1*5*1) = 1/20 = 0,05
б) (11*21*9*8)/(15*22*28*9) = (1*7*1*2)/(5*2*7*1) = 2/(5*2) = 2/10 = 0,2
в) (19*40*5*9)/(25*57*36*16) = (1*10*1*1)/(5*3*4*4) = 2/(3*4*4) = 1/(3*2*4) = 1/24
г) (4*6*21*8)/(1*1*5*35) = 4 032/175 = 23 7/175
№3
a) (3*5*12*1)/(4*9*25*3) = (1*1*3*1)/(1*9*5*1) = 1/(3*5) = 1/15
б) (4*4*15*11)/(11*5*16*3) = (1*1*3*1)/(1*1*1*1) = 3
в) (3*4*12*7)/(8*9*7*3) = (1*1*4*1)/(2*2*1*1) = 1
г) (1*55*13*9)/(1*3*11*5) = (1*11*13*2)/(1*1*1*1) = 26
д) (8*1*3*10)/(3*5*4*1) = (2*1*1*2)/(1*1*1*1) = 4
е) (9*5*15*14)/(5*3*7*3) = (1*1*15*2)/(1*1*1*1) = 30