用自己喜欢的方式表示下面算式的意思7十5一8二，12一9十8二怎么计算 为什么人要不断的学习
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一辆公交车上有7个人，一站后上车5人，又一站后下车8人，此时车上有4人
12-9+8=11
一人有12个苹果，送人9个苹果，他又买了8个，此时还剩11个苹果
7+5－8=4；12－9+8=11；
绛旓細鑽夊湴涓婃湁3鍙緤锛屽張鏉ヤ簡6鍙緤锛屼竴鍏辨湁3+6=9鍙緤 鑽夊湴涓婃湁9鍙緤锛岃蛋浜5鍙緤锛岃繕鍓╀笅9-5=4鍙緤 濡傛灉鏈鏈変粈涔堜笉鏄庣櫧鍙互杩介棶锛屽鏋滄弧鎰忚鐐瑰嚮鍙充笂瑙掑ソ璇
绛旓細14+4-4 浜18-4 浜14
绛旓細16.3=5鍙1/3
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绛旓細鍏充簬3*2鐢诲浘琛ㄧず涓嬮潰绠楀紡鐨鍚箟锛屽涓嬶細棣栧厛锛屾垜浠煡閬3鍜2閮芥槸鏁板瓧锛屽畠浠彲浠ョ敤鏉ヨ繘琛屾暟瀛﹁绠椼傚綋鎴戜滑鎶3鍜2鐩镐箻鐨勬椂鍊欙紝灏卞彲浠ュ緱鍒6杩欎釜绛旀銆傝繖灏辨槸3x2鐨勫惈涔夈傞櫎浜嗘暟瀛﹁绠楋紝3x2杩樻湁鍏朵粬鐨勫惈涔夈傛瘮濡傦紝鎴戜滑鍙互鐢3x2鏉ヨ〃绀轰竴涓暱鏂瑰舰鐨勯潰绉傚亣濡傝繖涓暱鏂瑰舰鐨勯暱鏄3涓崟浣嶏紝瀹芥槸2涓崟浣嶏紝閭ｄ箞杩欎釜...
绛旓細杩欎釜闂闇瑕佺粨鍚堜笂涓嬫枃鐞嗚В锛屾牴鎹粰鍑虹殑绠楀紡锛屾垜浠彲浠ュ緱鍒帮細绗竴涓畻寮忥細8+21+3 琛ㄧず鐨鎰忔濇槸锛8鍔犱笂21鍐嶅姞涓3銆傜浜屼釜绠楀紡锛2+8-12 琛ㄧず鐨勬剰鎬濇槸锛2鍔犱笂8鍐嶅噺鍘12銆傛牴鎹畻寮忥紝鎴戜滑鍙互璁＄畻鍑虹粨鏋滐細8+21+3 = 32 2+8-12 = -2
绛旓細鍥炵瓟锛1鐨勫钩鏂=1 3鐨勫钩鏂=9 5鐨勫钩鏂=25 7鐨勫钩鏂=49 9鐨勫钩鏂=81
