a. -12 + 19 - (-15) = ... b. 11 -(-20) + (-10) =...

Name: a. -12 + 19 - (-15) = ... b. 11 -(-20) + (-10) =...
Uploaded: 2024-05-30T17:37:00
Duration: PT3M58.3613S
Description: a. -12 + 19 - (-15) = ... b. 11 -(-20) + (-10) =...