2732+(5000-n)=4803
5000-n = 4803-2732
5000-n= 2071
n=5000-2071
n=2929
------------------------------------
2732+(5000-2929)=4803
2732 + 2071 = 4803
4803 = 4803
8113-(10101-r)=5207
10101-r =8113 - 5207
10101-r = 2906
r = 10101 - 2906
r = 7195
-------------------------------------------
8113-(10101-7195)=5207
8113 - 2906 = 5207
5207 = 5207