Question

(4/5-3/4)* 7,8+(2/3+4/7)*7/13

Answer 1

(4/5-3/4)* 7,8+(2/3+4/7)*7/13=1 17/300
1)4/5-3/4=16/20-15/20=1/20
2)2/3+4/7=14/21+12/21=26/21
3)1/20×7,8=0,05·7,8=0,39
4)26/21×7/13=2/3
5)39/100+2/3=117/300+200/300=317/300= 1 17/300