Respuesta :
Answer:
99
Step-by-step explanation:
We can split this up by doing the tens and then the ones. 12 = 10 + 2, so we have 87 + 12 = 87 + 10 + 2 = 97 + 2 = 99.
Answer:
99
Step-by-step explanation:
We can split this up by doing the tens and then the ones. 12 = 10 + 2, so we have 87 + 12 = 87 + 10 + 2 = 97 + 2 = 99.