loganferg9202
10.07.2019 •
Mathematics
Rita, ali, and deandre sent a total of 85 text messages during the weekend. deandre sent 3 times as many messages as ali. rita sent 5 more messages than ali. how many messages did they each send?
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Ответ:
You would use matrix. r+a+d=85 0r- 3a+d=0 r- a+0d=5 r=21 a=16 d=48 Rita sent 21 text messages, Ali sent 16 text messages, and Deandre sent 48 text messages.
Ответ:
(x-25)/25=300%=3
x-25=75
x=100