Question

Tính

3 + 1 + 6                 8 – 4 – 3

9 – 1 – 3                 3 + 4 + 2

Answer 1

3 + 1 + 6 = 4 + 6 = 10                                                            

8 – 4 – 3 = 4 – 3 = 1

9 – 1 – 3 = 8 – 3 = 5                                                               

3 + 4 + 2 = 7 + 2 = 9