5个3用加减乘除括号怎么等于7?
\u4e94\u4e2a7\u7528\u52a0\u51cf\u4e58\u9664\u600e\u6837\u53ef\u4ee5\u7b49\u4e8e3\uff1f\u4e0d\u80fd\u7528\u62ec\u53f7\u5206\u5b507+7
\u5206\u6bcd7\u518d\u52a0\u4e0a7/7
\u5176\u5b9e\u4e0d\u7b97\u592a\u96be \u4ece\u540e\u5f80\u524d\u7b97\u5c31\u5bb9\u6613\u4e86
(2\uff0b2\uff09\u00f7\uff082\uff0b2\uff09\uff0b2\uff1d3
2\uff0b2\uff0b2\uff0b2\u00f72\uff1d7
2\u00d72\u00d72\uff0b2\u00f72\uff1d9
解:3/3+(3*3-3)=7
3*3-3+3/3=7
绛旓細3脳3-3+3梅3=7
绛旓細3-3+(3+3)梅3=2;3+3+3-3-3=3;
绛旓細(3+3+3)/3+3-3=3 (3+3)/3+锛3+3锛/3=4 (3+3)/3+3+3-3=5 3+3+3+3-3-3=6 锛3梅3锛+锛3+3锛壝3*3=7 锛3+3锛/3+3*3-3=8 锛3+3+3锛/3+3+3=9 锛3梅3锛+3*3*锛3梅3锛=10
绛旓細鎵浠ョ瓟妗堜负锛3脳3脳3梅3-3=6銆
绛旓細(4+4+4)梅4+4=12梅4+4=3+4=7
绛旓細锛5梅5锛+锛5梅5锛+5=7
绛旓細锛3+3+3锛壝3+3=6
绛旓細3*3-3*锛3/3锛 =6
绛旓細鍙互鍒楃畻寮忥細-3脳3梅3+3脳3=6銆傝繖閲岀殑绠楀紡浣跨敤浜嗗洓绉嶈繍绠楁柟娉曪紝鏍规嵁缁煎悎杩愮畻鐨勭浉鍏宠瀹氾紝搴斿厛璁$畻涔樻硶鍜岄櫎娉曪紝鍚岀瓑绾х殑杩愮畻鎸夌収浠庡乏鑷冲彸鐨勯『搴忚绠楋紝-3脳3=-9锛-9梅3=-3锛3脳3=9锛岀劧鍚庤绠楀湪璁$畻鍔犳硶鍜屽噺娉曪細-3+9=6銆
绛旓細锛3+3+3锛壝3+3=6 鍥炵瓟瀹屾瘯銆