初一数学书112页7题
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绛旓細瑙ｏ細璁鹃附绗紉涓 6x+3=8x-5 x=4 楦藉瓙鏈6x+3=27(涓級F:瀵逛簡16棰 G锛氫笉鍙兘寰80鍒 锛100-80锛/锛1+5锛=灏忔暟
绛旓細7.鏈変竴缇ら附瀛愬拰涓浜涢附绗.濡傛灉姣忎釜楦界浣6鍙附瀛恅鍒欏墿浣3鍙附瀛愭棤楦界鍙綇`濡傛灉鍐嶉鏉5鍙附瀛恅杩炲悓鍘熸潵鐨勯附瀛恅姣忎釜楦界鍒氬ソ浣8鍙附瀛恅鍘熸湁澶氬皯鍙附瀛愬拰澶氬皯涓附绗硷紵瑙ｏ細璁惧師鏈墄涓附绗 6x+3+5=8x 6x-8x=-3-5 -2x=-8 x=4 6x+3=27鍙 涓鍏4鍙附绗硷紝27鍙附瀛 8.鐖朵翰鍜屽コ鍎跨殑骞撮緞涔...
绛旓細X+Y=91锛2X-Y=Y/3-X 瑙ｆ柟绋媂=28锛孻=63 濂崇幇鍦ㄥ勾榫28宀併
绛旓細绗竴娆 350X+250X=400 600x=400 x=2/锛岀埗浜茬幇鍦91-x宀 骞撮緞宸槸涓嶅彉鐨;3*2=4/3 绗簩娆 锛2/锛27鍙附瀛 锛8锛夎В;3 锛7锛夎В锛屾牴鎹绛夐噺鍏崇郴鍒楁柟绋 2x-(91-x)/锛氳x涓附绗 6x+3+5=8x x=4 6x+3=27鍙 涓鍏4鍙附绗硷細璁惧コ鍎跨幇鍦▁宀(5)瑙ｏ細璁捐x澶╁彲浠ヨ拷涓婃參椹 240x=150...
绛旓細240閲*蹇┈闇瑕佺殑澶╂暟=150閲*鍏堣蛋鐨12澶+150x蹇┈闇瑕佸灏戝ぉ鎱㈤┈涔熶竴鏍疯蛋浜嗗灏戝ぉ 瑙ｏ細璁捐x澶╁彲浠ヨ拷涓婃參椹240x=150*12+150x 240x-150x=150*12 90x=1800 x=20(澶╋級 璁剧涓娆＄浉閬囦负X鍒嗛挓銆350X+250X=400 X=2/3 鍐嶇粡杩嘫鍒嗛挓鍙堢浉閬囥350Y+250Y=400*2 Y=4/3 缁忚繃2/3鍒嗛挓棣...
绛旓細鐖朵翰鍜屽コ鍎垮勾榫勫拰鏄91锛屽綋鐖朵翰骞撮緞鏄コ鍎跨幇鍦ㄧ殑2鍊嶆椂锛屽コ鍎垮勾榫勬槸鐖朵翰鐜板湪骞撮緞鐨勪笁鍒嗕箣涓锛屾眰濂冲効鐨勫勾榫勩
绛旓細鍒濅竴鏁板涔112椤7棰 鎴戞潵绛 棣栭〉 鍦ㄩ棶 鍏ㄩ儴闂 濞变箰浼戦棽 娓告垙 鏃呮父 鏁欒偛鍩硅 閲戣瀺璐㈢粡 鍖荤枟鍋ュ悍 绉戞妧 瀹剁數鏁扮爜 鏀跨瓥娉曡 鏂囧寲鍘嗗彶 鏃跺皻缇庡 鎯呮劅蹇冪悊 姹借溅 鐢熸椿 鑱屼笟 姣嶅┐ 涓夊啘 浜掕仈缃 鐢熶骇鍒堕 鍏朵粬 鏃ユ姤 鏃ユ姤绮鹃 鏃ユ姤骞垮満 鐢ㄦ埛 璁よ瘉鐢ㄦ埛 瑙嗛浣滆 鏃ユ姤浣滆 ...
绛旓細鐢诧紝涔欎袱浜哄叡甯90kg鐨勮鏉庡潗杞︼紝鐢茶秴閲嶉儴鍒嗕氦娆5.6鍏冿紝涔欒秴閲嶉儴鍒嗕氦娆4.4鍏冿紝濡傛灉鐢诧紝涔欎袱浜哄甫鐨勮鏉庡綊涓浜烘惡甯︼紝瓒呴噸閮ㄥ垎搴斾氦娆14鍏冿紝闂箻鐏溅鏃舵瘡浜哄厤璐规惡甯﹁鏉庣殑閲嶉噺鏄灏慿g锛熻В锛氳姣忎汉鍏佽鎼哄甫a鍗冨厠锛岃秴閲嶉儴鍒嗘瘡鍗冨厠b鍏 鏍规嵁棰樻剰 90-2a=锛5.6+4.4锛/b锛1锛90-a=14/b锛2锛夌敱锛1锛...
绛旓細灞曞紑鍏ㄩ儴 鏇村杩介棶杩界瓟 杩界瓟 杩介棶 鏈鍚庝竴棰樻槸: (a-2b+1)鐨勫钩鏂 鏈洖绛旇鎻愰棶鑰呴噰绾 宸茶禐杩 宸茶俯杩< 浣犲杩欎釜鍥炵瓟鐨勮瘎浠锋槸? 璇勮 鏀惰捣 鍏朵粬绫讳技闂2016-06-25 涓夊勾绾т笅鍐鏁板涔112椤7棰绛旀 8 2014-11-03 鍒濅竴鏁板涔112椤绗6棰樼殑绛旀銆愭湁棰樼洰,鎷滄墭浜嗗彲浠ュ姞鎮祻鍒嗐 78 2013-11-03 鍒濅竴涓...
绛旓細瑙ｏ細娌″揩椹瑇澶╄拷涓婃參椹240x=150涔樹互(12+x)
