规定一种新运算符号*的运算过程为a*b=1/3a-1/4b,那么解方程5*（-5的值

晕,把5,-5往里面带,5*（-5）=1/(3x5)-1/[4x(-5)]=1/15+1/20=7/60

瑙勫畾涓绉嶆柊杩愮畻绗﹀彿*鐨勮繍绠楄繃绋涓篴*b=3a-4b姹傝В鏂圭▼2*(2*x)=1*x
绛旓細瑙勫畾涓绉嶆柊杩愮畻绗﹀彿*鐨勮繍绠楄繃绋涓篴*b=3a-4b姹傝В鏂圭▼ 2*锛2*x)=1*x 2*(3脳2-4x)=3脳1-4x;2*(6-4x)=3-4x;3脳2-4(6-4x)=3-4x;6-24+16x=3-4x;20x=21;x=21/20;寰堥珮鍏翠负鎮ㄨВ绛,skyhunter002涓烘偍绛旂枒瑙ｆ儜 濡傛灉鏈鏈変粈涔堜笉鏄庣櫧鍙互杩介棶,

瑙勫畾鏂拌繍绠楃鍙*鐨勮繍绠楄繃绋涓篴*b=1/3a-1/4b.(1).瑙ｆ柟绋2*x+1*x=0.
绛旓細1/2=1/(2x)x=1

瑙勫畾涓绉嶆柊杩愮畻绗﹀彿*鐨勮繍绠楄繃绋涓篴*b=1\3a-1\4b姹傝В鏂圭▼2*(2*x)=1...
绛旓細瑙ｅ緱x= -8/15 5*锛-5锛=1/3脳5-1/4脳锛-5锛=5/3+5/4=35/12

鐜瑙勫畾涓绉嶆柊杩愮畻绗﹀彿*鐨勮繍绠楄繃绋涓篴*b=1/3a-1/4b,閭ｄ箞瑙ｆ柟绋2*(2*...
绛旓細鍥犱负a*b=1/3a-1/4b锛屾墍浠2*x=锛1/3锛*2-锛1/4锛墄=2/3-x/4锛屾墍浠2*锛2*x锛=2*锛2/3-x/4锛=锛1/3锛*2-(1/4)*锛2/3-x/4锛=2/3-1/6+x/16=1/2+x/16,1*x=(1/3)*1-(1/4)*x=1/3-x/4,鍥犱负2*锛2*x锛=1*x锛屾墍浠1/2+x/16=1/3-x/4,瑙ｅ緱x=8/3...

瑙勫畾鏂拌繍绠楃鍙*鐨勮繍绠楄繃绋涓:a*b=1/3 a-1/4 b 瑙ｆ柟绋2*(2*x)=1*x
绛旓細宸茬煡锛歛*b=1/3 a-1/4 b 鎵浠(2*x)=2/3-1/4x,1*x =1/3-1/4x 2*(2*x)=2/3-1/4锛2/3-1/4x锛2/3-1/4锛2/3-1/4x锛=1/3-1/4x 2/3-1/6+1/16x=1/3-1/4x x=-8/15

鏁板:瀹氫箟鏂拌繍绠楃鍙鈥*鈥鐨勮繍绠楄繃绋涓篴*b=[(1/2)a]-[(1/3)b],璇曡В...
绛旓細鏍规嵁瀹氫箟: 2*(2*x) = 2*[(1/2)脳2 -(1/3)x]= 2*[ 1 - (1/3)x]= (1/2)脳2 - (1/3)[1 - (1/3)x]= 1 - 1/3 + (1/9)x = 2/3 + (1/9)x 1*x = (1/2)脳1 -(1/3)x = 1/2 - (1/3)x 鐢变簬 2*(2*x) = 1*x 鎵浠ユ湁: 2/3 + (1/9...

瑙勫畾鏂拌繍绠楃鍙鈥鐨勮繍绠楄繃绋涓篴鈥籦=3a-4b,鍒欒В鏂圭▼2鈥(2鈥粁)=4鈥粁...
绛旓細a鈥籦=3a-4b 鍒欏師寮忓乏杈2鈥伙紙2鈥粁)=3*2-4*(3*2-4*x)=6-24+16x=16x-18 鍙宠竟4鈥粁=3*4-4*x=12-4x 鍒欏師涓栫瓑浠蜂簬16x-18=12-4x 鍗 20x=30 x=3/2

鐜瑙勫畾涓绉嶆柊杩愮畻绗﹀彿*鐨勮繍绠楄繃绋涓篴*b=1/3a-1/4b,閭ｄ箞瑙ｆ柟绋2*(2*...
绛旓細2*锛2*x锛=1*x2/3-1/4(2*x)=1/3-1/4x2/3-1/4(2/3-1/4x)=1/3-1/4x2/3-1/6+1/16x=1/3-1/4x1/16x+1/4x=1/3+1/6-2/35/16x=-1/6x=-8/15

瑙勫畾鏂拌繍绠楃鍙*鐨勮繍绠楄繃绋涓篴*b=1/3a-1/4b,瑙ｆ柟绋2*(2*x)=1*x
绛旓細2*x=1/3脳2-1/4x=2/3-1/4x 绱1/3脳2-1/4(2/3-1/4x)=1/3脳1-1/4x 2/3-1/6+1/16x=1/3-1/4x 5/16x=-1/6 x=-8/15

瑙勫畾鏂拌繍绠楃鍙鈥*鈥鐨勮繍绠楄繃绋涓:a*b=13a-14b,(1)3*(-4)=___; (2...
绛旓細锛1锛3*锛-4锛=13脳3-14脳锛-4锛=1+1=2锛涳紙2锛夋柟绋嬪寲涓猴細2脳锛13脳3-14脳x锛=1锛屽嵆2锛1-14x锛=1锛岃В寰楋細x=2锛庢晠绛旀涓猴細锛1锛2锛涳紙2锛墄=2锛