97减x除以181减x等于5分之2
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分式若A除以X-5+B除以X-2等于(5X加24)除以(X平方减3X减10)这题有点问题,如果题目是:分式若A除以X-5+B除以X+2等于(5X加24)除以(X平方减3X减10),求A和B.那么此题可
X-(X-1)/2=1+(X+2)/5两边乘以1010X-5(X-1)=10+2(X+2)3X=9X=3
x除以4等于1.5减xx=4(1.5-x)x=6-4xx+4x=65x=6x=1.2
根据题意知:X/3=Y/4=Z/5设X/3=Y/4=Z/5=K则X=3K,Y=4K,Z=5K所以(X+Y)/(X-2Y+3Z)=(3K+4K)/(3K-2*4K+3*5K)=7K/(10K)=7/10
x/6-3=x/7+542(x/6-3)=42(x/7+5)7x-126=6x+2107x-6x=210+126x=336
5/(x²+x)-1/(x²-x)=05/x(x+1)-1/x(x-1)=05x-5-x-1=04x=6x=3/2x=2分之3再问:5x-5-x-1=0这个是怎么算的?再答:方程两
x=-1/3
(1).1-2/3x=2/91/3x=2/9x=2/9÷1/3x=2/3(2).6x-3x=6÷53x=6/5x=6/5÷3x=2/5
x-x/100=0.6930.99x=0.693x=0.7
x除以45减X除以55等于0.44x/45-x/55=0.44两边同乘以495得:11x-9x=217.82x=217.8x=108.9
x/30-2=x/35等式分母同时乘以2107x-420=6x7x-6x=420x=420
6/x=x-56=x(x-5)x^2-5-6=0(x-6)(x+1)=0x1=6x2=-1再问:^是什么再答:^2是平方
先通分变成18X-18360=X解得X=1080
x/2-x/3=163x-2x=96x=96
X/3-5=(5-X)/2X/3-5=2.5-X/2X/3+X/2=2.5+5(1/3+1/2)X=7.55/6X=7.5X=9
x/5-x/6=1.4两边同时乘以30,得6x-5x=42所以x=42--------------------梳理知识,帮助别人,愉悦自己.“数理无限”团队欢迎你
x^2/(5-x)=0.04xx^2-0.04x(5-x)=0x^2+0.04x^2-0.2x=0x=0等式成立x≠01.04x=0.2x=0.2/1.04=5/26综上所述:x=0或x=5/26再问
x÷(3/2x)=x-3/22x^2/3-x=3/24x^2-6x=9(2x-3/2)^2=9+9/4x=(±根号下45/4+3/2)/2