Respuesta :
Answer:
The answer is 12
Step-by-step explanation:
|21| = just 21
|-9| = positive 9
so take that into this:
21 - 9 = 12
Answer:
The answer is 12
Step-by-step explanation:
|21| = just 21
|-9| = positive 9
so take that into this:
21 - 9 = 12