Вычислите а) (3/4+1/6): 3+(5/6-1/2): 9 б) (3/4-5/12)*3-1/16: 1/8

(3\4 + 1\6) : 3 + ( 5\ 6 - 1\2) : 9 = 11/12 : 3/1 + (5/6 - 1/2) : 9/1 = 11/12 х 1/3 + 1/3 х 1/9 = 1/3 х ( 11/12 + 1/9) = 1/3 х 37/36 = 37/108 ( 3\4 - 5\12)*3 - 1\16 : 1\8 = 1/3 * 3 - 1\16 : 1\8 = 3/3 - 1\16 : 1\8 = 1 - 1/16 х 8/1 = 1- 8/16 = 1- 1/2 = 1/2

А) (3/4+1/6):3+(5/6-1/2):9= (9/12+2/12):3+(5/6-3/6):9= 11/12*1/3+1/3*1/9=11/36+1/27= 33/108+4/108= 37/108

б) (3/4-5/12)*3-1/16:1/8= (9/12-5/12)*3-1/16*8= 1/3*3-1/2= 1-1/2= 1/2