у+5/7-1/8=2/3-1/14
у+40/56-7/56=28/42-3/42
у+33/56=25/42
у=100/168-99/168
у=1/168
y+5/7-1/8=2/3-1/14
y+40/56-7/56=28/42-3/42
y+33/56=25/42
y=25/42-33/56=0.006
ответ: 0.006
у+5/7-1/8=2/3-1/14
у+40/56-7/56=28/42-3/42
у+33/56=25/42
у=100/168-99/168
у=1/168
y+5/7-1/8=2/3-1/14
y+40/56-7/56=28/42-3/42
y+33/56=25/42
y=25/42-33/56=0.006
ответ: 0.006