If you mean 6/7 then yes it is equivalent to 42/49
42/54 = 7/9 is.
2/7=0.28571428571
0.2857
2/7 of 623 is 178
37/7
10 is two sevenths of 35.
35/12
19/7
8+3/7 - 2+6/7 = 59/7 - 20/7 = 39/7 = 5 and 4/7
14
Expressed as a mixed number in its simplest form, 3/7 + 6/7 = 1 2/7 or one and two sevenths.