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

а) (3/4+1/6):3+(5/6-1/2):9= (18/24+4/24):3+(5/6-3/6):9=(22/24)*(1/3)+(1/3)*(1/9)= (22/72)+(1/18)=(22/72)+(4/72)=26/72=13/36
б) (3/4-5/12)*3-1/16:1/8=(9/12-5/12)*3-1/2=1-1/2=1/2