1) 5289 - (1289 + 2550)=1450
2) 7673 + 615 – 3673=4615
3) 3375 + (1625 - 2460)=2540
4) 9782 – (2540 - 1782)=9024
1) 5289 - (1289 + 2550)=1450
2) 7673 + 615 – 3673=4615
3) 3375 + (1625 - 2460)=2540
4) 9782 – (2540 - 1782)=9024