Պարապմունք 63.

2/5, 5/8, 7/8, 191/207:

24/48, 32/48, 36/48, 40/48

-1/2, -1/3, -(2/3), -(2/5)

ա)-4/8, -(2/8)

բ) -14/28, -(7/28)

գ) -18/36, -(9/36)

-(30/60), -(40/60), -60/50, -55/60