2/7 = 12/42 5/6 = 35/42 12/42 + 35/42 = 47/42 or 1 and 5/42
35/42 = 5/6
(-3/7)/(5/14) = -3/7 x 14/5 = -42/35 = -6/5
5 over 6
35/42 = 5 x 7/6 x 7 = 5/6
That's the same as -3/7 x 14/5 = -42/35 = -6/5 or -1 and 1/5
5 over 6
5.8333
(35/8) / (36/5) = (35/8) x (5/36) = 175/288
It is: 9/7 divided by 5/81 = 729/35
5/6
If you mean 4 divided by 5/7 then it is 28/5 or 5.6 as a decimal