ii. _ 6 + x
12. 11(8-5) = 33
13. (4 x 3) + m
14. (5.c. d) = 30
15. (9 + 2) - 5
+
16. (
78) - 12
17.4 x 5 = 20
18. (y. 4) - 10 = 30
19.25 - (r + s)
20.65 + m - 78​