p=1451-207
p=1244
1244+207=1451
2)1834-y=753
y=1834-753
y=1081
1834-1081=753
3)к-183=2095
к=2095+183
к=2278
2278-183=2095
a) 5+2/9=7/9
б)6-5/7=1/7