Question

fill in the blanks
(13+ (-12))+( ....)
+(-7)]
CC-12)​

Answer 1

Step-by-step explanation:

1st. 1 and 21

3rd. -20×-2×-5×7

=-1400

4th. 18[4]=18×7+18×-3

72 =126-54

72. =72

5th. [-36/12]/3

[ -3]/3

-1

2nd. 20 and -2 and -1