英语翻译the are 7 stamps whose face value is 3 Jiao each and 4 stamps with the face value of 5 Jiao.how many different kinds of postages can be pald by then?(the postage should be more than zero).看在我辛辛苦苦打字的份上,帮我翻译

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英语翻译theare7stampswhosefacevalueis3Jiaoeachand4stampswiththefacevalueof5Jiao.howmanydifferentkindsofp

英语翻译the are 7 stamps whose face value is 3 Jiao each and 4 stamps with the face value of 5 Jiao.how many different kinds of postages can be pald by then?(the postage should be more than zero).看在我辛辛苦苦打字的份上,帮我翻译
英语翻译
the are 7 stamps whose face value is 3 Jiao each and 4 stamps with the face value of 5 Jiao.how many different kinds of postages can be pald by then?(the postage should be more than zero).
看在我辛辛苦苦打字的份上,帮我翻译一下吧,最好能把这题做出来,谢谢大家了(不做也行,主要是翻译)

英语翻译the are 7 stamps whose face value is 3 Jiao each and 4 stamps with the face value of 5 Jiao.how many different kinds of postages can be pald by then?(the postage should be more than zero).看在我辛辛苦苦打字的份上,帮我翻译
有7张面值均为3角和4张面值为5角的邮票.用它们可以有多少种支付邮费的方式?(邮费大于0)

7谁的邮票票面价值3角每4个邮票的帐面价值5 Jiao.how许多不同种类的postages可以pald那时吗?(邮费应大于零)。