1 1/49 ÷ 25/42 = (49/49 + 1)/25/42= 50/49 ÷ 25/42= 50/49 x 42/25= 2100/1225= 1 675/1225= 1 5/1225
7/48 ÷ 6 6/7 = 7/48 ÷ (48/7 + 6/7)= 7/48 ÷ 54/7= 7/48 x 7/54= 49/2592= 0.0189
5 7/13 ÷ 4/39 = (13x5 + 7)/13 ÷ 4/39= (65 + 7)/13 ÷ 4/39= 72/13 ÷ 4/39= 72/13 x 39/4= 936/52= 18
1 1/49 ÷ 25/42 = (49/49 + 1)/25/42
= 50/49 ÷ 25/42
= 50/49 x 42/25
= 2100/1225
= 1 675/1225
= 1 5/1225
7/48 ÷ 6 6/7 = 7/48 ÷ (48/7 + 6/7)
= 7/48 ÷ 54/7
= 7/48 x 7/54
= 49/2592
= 0.0189
5 7/13 ÷ 4/39 = (13x5 + 7)/13 ÷ 4/39
= (65 + 7)/13 ÷ 4/39
= 72/13 ÷ 4/39
= 72/13 x 39/4
= 936/52
= 18