Roma performed homeworks of 3 h from them to the mathematician 15/12 and the native language 11/12ch what is the time was spent by Roma for other objects

10
1) 15/12+11/12=26/12=2 2/12 hours 2)3-2 2/12= (3-2)-2/12=1-2/12=12/12-2/12=10/12 hours it did the others uroki75 minutes or 1 hour 15 minutes
90
Answer add