1) 17/20-x=14/20 17/20-14/20=-x 3/20=-хх=-3/20б) 2/15-7/15+y=14/15 2/15-7/15-14/15=-y-19/15=-yy=19/15y=1 4/15
а) 17/20 - х = 14/20
-х = -3/20
х = 3/20
б) 8/15 - 7/15 + у = 14/15
1/15+y = 14/15
y = 13/15