harveyangel123p2tjae
20.06.2019 •
Mathematics
Kelly is three years younger than her sister. the sum of their ages is 34 years. how old is kelly and how old is her sister?
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Ответ:
Kelly is 20
Her sister is 14
Step-by-step explanation:
34 ÷ 2 = 17 (average)
17 + 3 = 20
17 - 3 = 14
Ответ:
2
1 - -
3
Step-by-step explanation:
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