AnnaChen
AnnaChen AnnaChen
  • 01-07-2020
  • Mathematics
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Need help right now please!!!! ‍♀️‍♀️‍♀️

Need help right now please class=

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SvetkaChem
SvetkaChem SvetkaChem
  • 01-07-2020

Answer:

a. 13

Step-by-step explanation:

x - youngest sister

x + 1 - middle sister

x + 1 + 1  - oldest sister

x + x + 1 + x + 1 + 1 = 39

3x + 3 = 39

3x = 36

x = 12

x+ 1 = 12 + 1 = 13

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