Question

add 9 yeara 8 months and 8 year 11 months​

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

18 years 7 months

Step-by-step explanation:

9 years 8 months + 8 years 11 months

17 years 19 months

1 year = 12 months

19 months = 1 year 7 months

17 years 19 months = 17 years + 1 year 7 months

= 18 years 7 months