help mamipusing no 1 s.d 7 thanks

1. 12 + 13= 25
2. 21 - 14= 7
3. 18 - 16 + 22= 24
4. 19 + 11 - 15 = 15
5. 12 + 5 = 17 - (6 + 8 =14)= 17 - 14 =3
6. 24 × 9= 216
7. 38 ÷ 2= 19

1. 25
2. 7
3. 24
4. 15
5. 3
6. 234
7. 19