a. 18 - 4 = . . . . b. 19 - (-2) = . . . .

Name: a. 18 - 4 = . . . . b. 19 - (-2) = . . . .
Uploaded: 2024-04-06T18:01:43
Duration: PT1M55.31S
Description: a. 18 - 4 = . . . . b. 19 - (-2) = . . . .