well i am not sure but i think it does.
2.5
2/5 x 3/7 is 6/35
5/7 * 2/5 = 10/35 or 2/7
3/5 + 7/8 + 6/7 = 2 93/280
30/140 = 3/14
The answer is 6/7 minus 2/5 = 16/35
Expressed as a proper fraction in its simplest form, 5/7 - 5/5 = -2/7 or negative two sevenths. Expressed as a decimal, this is equal to -0.285714 recurring (that is, -0.285714285714...)
2/7 is 10/35, 2/5 is 14/35, add these to get 24/35
The LCD of 2/7 and 4/5 is 35.
(2/5) / (6/7) = (2/5) * (7/6) = 14/30 = 7/15.
Same as finding the LCM of 6, 5, 7: 2*3*5*7 = 210
Expressed as a decimal, 5 4/5 + (-3 2/7) = 2.5142857 recurring (that is, 2.5142857142857...)