. Describe a problem that could be solved using the following system. 3A + 4B = 84 2A + 5B = 91?
回答 (1)
2015-12-09 10:19 pm
3 apple and 4 banana cost 84 cents and
2 apple and 5 banana cost 91 cents
2 apple and 5 banana cost 91 cents
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