1. (4732-1876)+3692=2856+3592=6448
2. (9302-7409)+3288=1893+3288=5181
3. 7971-(7722-2277)=7971-5445=2526
1. (4732-1876)+3692=2856+3592=6448
2. (9302-7409)+3288=1893+3288=5181
3. 7971-(7722-2277)=7971-5445=2526
2. 3288+(9302-7409)=5181
3. 7971-(7722-2277)=2526