willoughbysierra
21.08.2019 •
Mathematics
The coast of one orange r, and three apples, a, is $7. three oranges and three apples cost $9. what is the cost of one apple ? what is the cost of one orange ?
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Ответ:
3o + 3a = 9 ;
(-)
-2o = -2;
o = $1;
3a = 6;
a = $2.
Ответ:
920,438
Step-by-step explanation: