Решите уравнения:
3/5+x=4/5 11/25-k=7/25
y-2/7=6/7 d+2/9=1/9+7/9

3/5+x=4/5 х=4/5-3/5х=1/511/25-k=7/2511/25-7/25=к4/25=кy-2/7=6/7у=6/7+2/7у=8/7=1  1/7 d+2/9=1/9+7/9d=1/9+7/9-2/9d=6/9=2/3