求不等式组5分之x-6
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5分之3x-7<2分之x-23X/5-7
2x+1分之5x-6再问:那过程喃?再答:
两边乘15x-51x>1/2两边乘2x-1≤6-3xx≤7/4所以1/2
2(x-6)<5(x+5);2x-12<5x+25;3x>-37;x>-37/3;2x<6;x<3;正整数解为1,2
-1和0再问:详细过程,谢谢再答:3x+2分之5-2分之1(4-3x)≥6分之1(7x-6)解得等于X≥-1.5,而要非正整数解,所以为-1和0,Areyouunderstand?
4x-2y=-1①x+4y=2②①×2,得8x-4y=-2③②+③,得9x=0x=0y=1/2x/2<2(x-1)两边乘2,得x<4x-4x<4/3x/3>(x+2)/5两边乘15,得5x>3(x+2
解;3x-(x+2)/4>(2x-5)/672x-6(x+2)>4(2x-5)72x-6x-12-8x+20>058x>-8x>-4/291-x/5≤x/1515-3x≤x-4x≤-15x≥15/4
-2x>=102x/5-x/2>2x2x
(2x-5+(1-2x)/6)/3再问:题是这样的:3分之2x-5再+6分之1-2x小于或等于5分之4x+12再-1再答:那问题形式就简单多了(2x-5)/3+(1-2x)/6=-87即x>=-87/
6x+7分之5>4x+742x+5>28x+4914x>44x>22/78x+3<4x+404x
因为X/5+6>x/4+1x/5-x/4>-5所以x<100因为x+a<0所以x<-ax+a
(5-2x)/4>(3-2x)/6不等式两边同时乘以4和6的最小公倍数12,得3(5-2x)>2(3-2x)15-6x>6-4x-2x>-9x
5x-1>3(x+1)1/2x-13+11/2x+3/2x42x2x3(x+1)与二分之一x-1
2分之(X-3)+6>6分之(6X-1)两边同时乘以6得3(x-3)+36>6x-13x-9+36>6x-13x+27>6x-16x-3x
5x-2m>-4-x6x>2m-4x>(2m-4)/62分之x-3<3x+1同乘以2,得x-3-5x>-1(2m-4)/6=-1(2m-4)=-62m=-2m=-1