a. -54 : 6 + (-72) : (-12) = ... b. -32 : 8 + 81 : 9 = ...

Name: a. -54 : 6 + (-72) : (-12) = ... b. -32 : 8 + 81 : 9 = ...
Uploaded: 2023-11-24T02:12:00
Duration: PT3M49.1662S
Description: a. -54 : 6 + (-72) : (-12) = ... b. -32 : 8 + 81 : 9 = ...