Question

(3/4+1/5)×5/19 (12,1/3-7,3/4)×6/11 (2,3/5-5/8):19,3/4 9,2/7×1,2/5:13+6,3/7

Answer 1

15/20+4/20*5/19=
19/20*5/19=5/20=1/4

37/3-31/4*6/11=
148/12-93/12*6/11=
50/12*6/11=
25/11=2,3/11