1) (503+248)-364
2) (960-725)+209
3) (1000-727)+(420+180)
4) (350+270+105)-623
.............................
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Answers & Comments
1) (503+248)-364
2) (960-725)+209
3) (1000-727)+(420+180)
4) (350+270+105)-623
.............................