вычислите (8/1+9/2-4/1)*5 7/1:(9/7-3/2+6/1)

(1/8+2/9-1/4)* 5 1/7:(7/9-2/3+1/6) = 1 4/51/8 - 1/4 = -1/8-1/8+2/9 = -9/72 + 16/72 = 7/727/72*5 1/7 = 7/72*36/7=1/27/9-2/3 = 7/9-6/9=1/91/9+1/6= 6/54+9/54=15/541/2:15/54 =  9/5 = 1 4/5(10 3/4-12:1 1/5)*4/9+2 1/6+3 1/4:5 1/5 = 3 1/812:1 1/5 = 12:6/5=12*5/6 = 1010 3/4-10=3/43/4*4/9= 1/33 1/4:5 1/5 = 13/4:26/5 = 13/4*5/26=5/81/3 + 2 1/6 = 2/6+2 1/6 = 2 3/6 = 2 1/22 1/2 + 5/8 = 2 4/8 + 5/8 = 2 9/8 = 3 1/8