Answer:
104
Explanation:
Hello! :)
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Dasha=d, Anna=a
d=4a
d-39=a+39
d=a+78
Plug in d as 4a:
4a=a+78
Solve for a:
3a=78
a=26
Because d=4a, plug in a:
d=4*26
d=104
Dasha originally have 104 rose bushes
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I hope this helps :)