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浠ｅ叆鎺掗櫎绛夋柟娉曪紝
(
涓�
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灏炬暟娉?/p>
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渚?/p>
1 .
瓒呭競灏?/p>
99
涓嫻鏋滆杩涗袱绉嶅寘瑁呯洅锛屽ぇ鍖呰鐩掓瘡涓
12
涓嫻鏋滐紝灏忓寘瑁呯洅姣忎釜瑁?/p>
5
涓嫻鏋滐紝鍏辩敤浜嗗崄澶氫釜鐩掑瓙鍒氬ソ瑁呭畬銆傞棶涓ょ鍖呰鐩掔浉宸灏戜釜
?
A.3 B.4 C.7 D.13
銆愯В鏋愩�戦�?/p>
D
銆傝鏈?/p>
x
涓ぇ鍖呰鐩掞紝
y
涓皬鍖呰鐩掞紝鍒?/p>
12x+5y=99
锛屽叾涓?/p>
5y
鐨勫熬鏁?/p>
搴斾负
5
鎴?/p>
0
锛屼絾鏄?/p>
12x
涓哄伓鏁帮紝
99
涓哄鏁帮紝鎵�浠?/p>
5y
蹇呬负濂囨暟锛岃繖鏍峰氨纭畾浜?/p>
5y
鐨勫熬鏁颁竴
瀹氫负
5
锛岄偅涔?/p>
12x
灏辨槸灏炬暟涓?/p>
4
鐨勬暟锛屾墍浠?/p>
x
鍙兘涓?/p>
2
鎴?/p>
7
锛屽搴旂殑
y
绛変簬
15
鎴?/p>
3
锛屾牴鎹?/p>
鈥滃叡鐢ㄤ簡鍗佸涓洅瀛愬垰濂借瀹屸�?/p>
锛屾帓闄?/p>
x=7
锛?/p>
y=3
銆傚嵆
x=2
锛?/p>
y=15
锛?/p>
15
鈥?/p>
2=13
銆?/p>
鎬荤粨锛氬彲鐢ㄥ熬鏁版硶鐨勪笉瀹氭柟绋嬮棶棰樼殑棰樺瀷鐗圭偣锛氬綋鏈煡鏁扮殑绯绘暟涓嚭鐜颁簡
5
鐨勫�嶆暟锛?/p>
姣斿
20x
銆?/p>
35y
銆?/p>
105z
鏃讹紝鍙兘浼氱敤鍒板熬鏁版硶銆傚洜涓哄鏋滄槸
10
鐨勫�嶆暟锛屽叾灏炬暟蹇呯劧鏄?/p>
0
锛?/p>
濡傛灉鏄?/p>
5
鐨勫�嶆暟锛屽叾灏炬暟蹇呯劧鏄?/p>
5
鎴?/p>
0
锛岃繖鏍峰熬鏁板氨瀹规槗纭畾锛岃寖鍥存瘮杈冨皬銆?/p>
(
浜?/p>
)
濂囧伓鎬у拰璐ㄥ悎鎬?/p>