Question

calculati [0,(3)+1,(3):1+7/9]:(1+1/12)

Answer 1

(1,(6)+7/9) :13/12=
(5/3+7/9)*12/13=
22/9*12/13=22*4/(3*13)

Answer 2

[3/9+(13-1)/9 +7/9)]: (12+1)/12=
=(1/3+4/3+7/9):13/12
=(3+12+7)/9  *12/13
=(15+7)/9  *12/13
=22/9 * 12/13
= 264/117
=88/39