解方程：9-3y=5y+5
\u89e3\u65b9\u7a0b\uff1a9-3y=5y+5\uff0c\u5e76\u5bf9\u7ed3\u679c\u8fdb\u884c\u68c0\u9a8c9-3y=5y+5\uff0c\u79fb\u9879\u5f97\uff1a-3y-5y=5-9\uff0c\u5408\u5e76\u5f97\uff1a-8y=-4\uff0c\u89e3\u5f97\uff1by= 1 2 \uff0c\u5c06y= 1 2 \u4ee3\u5165\u65b9\u7a0b\u5de6\u8fb9\u5f97\uff1a9- 3 2 = 15 2 \uff0c\u4ee3\u5165\u53f3\u8fb9\u5f97\uff1a 5 2 +5= 15 2 \uff0c\u5de6\u8fb9=\u53f3\u8fb9\uff0c\u5219y= 1 2 \u662f\u539f\u65b9\u7a0b\u7684\u89e3\uff0e
| 方程移项合并得：-8y=-4， 解得：y=
|
绛旓細锛3锛夊幓鎷彿寰楋細3x-5+12-6x=8锛岀Щ椤瑰悎骞跺緱锛-3x=1锛岃В寰楋細x=-13锛涳紙4锛夊幓鍒嗘瘝寰楋細2-2m-3+3m=4锛岀Щ椤瑰悎骞跺緱锛歮=5锛涳紙5锛夊幓鎷彿寰楋細67y+2=2-32y锛岃В寰锛歽=0锛涳紙6锛鏂圭▼鍙樺舰寰楋細5x+5+20+30x3=1锛屽幓鍒嗘瘝寰楋細15x+15+20+30x=3锛岀Щ椤瑰悎骞跺緱锛45x=-32锛岃В寰楋細x=-3245锛
绛旓細鏂圭▼绉婚」鍚堝苟寰楋細-8y=-4锛岃В寰锛歽=12锛
绛旓細鍥炵瓟锛9-5=5y+3y 4=8y y=1/2
绛旓細鍥炵瓟锛-3y-5y=5-9 -8y=-4 y=1/2
绛旓細9-3y=5y+5 .-8y=-4 .y=1/2(鎴0.5)浜氬巻灞卞皬enjoy涓烘偍绛旈
绛旓細瑙ｆ柟绋 x+3x=-16 16y-2.5y-7.5y=5 3x+5=4x+1 9-3y=5y+5 鎴戞潵绛 1涓洖绛 #鐑# 璇ヤ笉璇ヨ瀛╁瓙寰堟棭瀛︿範浜烘儏涓栨晠?鍖垮悕鐢ㄦ埛 2014-10-27 灞曞紑鍏ㄩ儴 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2014-11-02 瑙ｄ笅鍒楁柟绋 x+3x=-60 16Y鈥2.5Y鈥7.5Y=5... 2011-11-16...
绛旓細鈶燲+3X=-16 4X=-16 X=-4 鈶16y-2.5y-7.5y=5 6y=5 y=6/5 鈶3x+5=4x+1 鈶9-3y=5y+5 8y=4 y=0.5
绛旓細涓.瑙ｄ笅鍒鏂圭▼ 锛1锛墄+3x=-16 4x=-16 x=-4 (2)16y-2.5y-7.5y=5 16y-10y=5 6y=5 y=5/6 (3)3x+5=4x+1 4x-3x=5-1 x=4 (4)9-3y=5y+5 5y+3y=9-5 8y=4 y=0.5 浜.璁惧幓骞存敹鍏ヤ负x 浠婂勾鍐滄皯浜哄潎鏀跺叆姣斿幓骞存彁楂20 浠婂勾涓猴紙1+20%锛墄=1.2x 浠婂勾浜哄潎鏀跺叆姣斿幓骞寸殑1....
绛旓細鈶燲+3X=-16 瑙ｏ細4X=-16 X=-4 鈶16y-2.5y-7.5y=5 瑙ｏ細6y=5 y=6/5 鈶3x+5=4x+1 瑙ｏ細X=4 鈶9-3y=5y+5 瑙ｏ細8y=4 y=0.5
绛旓細3.涓涓暟鍑忓幓瀹冪殑3鍒嗕箣1鐨勫樊绛変簬4鍒嗕箣1锛屼晶杩欎釜鏁版槸锛3/8 锛4.瑙ｆ柟绋锛岃繃绋嬪畬鏁淬3x+5=4x+1 瑙ｏ細3x-4x=1-5 -x=-4 x=4 9-3y=5y+5 瑙ｏ細鍚屼笂鍙緱y=-1/2 3x=5x-4 瑙ｏ細鍚岀悊x=2 5.濡傛灉涓杈嗘苯杞︾殑娌圭涓婊′簡娌癸紝鐢ㄥ幓3鍒嗕箣1鍚庯紝鍙堝姞涓婁簡15鍗囷紝娌圭姝ｅソ鍙堟弧浜嗭紝闂細娌圭鑳...
