2/3-x=2/3; 6/3+n=9/8; d+6/5=1/5.
1. х= 0 2. n=7/8 3. d=1
ес чо 2/3-2/3 2. 6/3-9/8=48/24-27/24=21/24=7/8 3. 6/5-1/5=4/5
ой, 5/5