六分之一加x加十等于七分之一x加四这个方程怎么做.
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8分之X+6分之X+187=X24分之7X+187=X24分之17x=187x=264
1/(x+4)+1/(x+7)=1/(x+5)+1/(x+6)1/(x+4)-1/(x+5)=1/(x+6)-1/(x+7)[(x+5)-(x+4)]/[(x+4)(x+5)]=[(x+7)-(x+6
等式两边乘以12:3x+12/5=2x+12/7x=12/7-12/5=-24/35
1/(x+5)-1/(x+6)=1/(x+7)+1/(x+8)1/(x+5)-1/(x+7)=1/(x+8)-1/(x+6)2/(x+5)(x+7)=2/(x+8)(x+6)(x+5)(x+7)=(x
七分之一[五分之一(三分之x+2+4)+6]=1五分之一(三分之x+2+4)+6=7五分之一(三分之x+2+4)=1三分之x+2+4=5三分之x+2=1x+2=3x=1
1/(x+4)-1/(x+7)=1/(x+3)-1/(x+6)(x+3)(x+6)(x+7)-(x+3)(x-6)(x+4)=(x+4)(x+7)(x+6)-(x+4)(x+7)(x+3)(x+3)(
(10X/7-20)*(1+1/8)=20+X(10X/7-20)*9/8=20+X45X/28-2.5*9=20+X45X/28-42.5=X17X/28=42.5X=42.5/17/28X=70再
(X+1/Y)(Z+1/X)(Y+1/Z)=XYZ+1/(XYZ)+X+Y+Z+1/X+1/Y+1/Z=XYZ+1/(XYZ)+4+1+7/3=4*1*7/3=XYZ+1/(XYZ)+22/3=28/
十四分之五
x=1/6+1/3-1/4x=1/12
1/2+1/6+1/12+1/20+1/30+1/42=(1-1/2)+(1/2-1/3)+(1/3-1/4)+(1/4-1/5)+(1/5-1/6)+(1/6-1/7)=1-1/7=6/7
x+5/4=7/5x=7/5-5/4x=28/20-25/20x=3/20所以:x=20分之3
1/(x+1)+1/(x-1)=7/(x^2-1)(x-1)/[(x+1)(x-1)]+(x+1)/[(x+1)(x-1)]=7/(x^2-1)(x-1)/(x^2-1)+(x+1)/(x^2-1)=
x+1/7x=568/7x=56x=49
二十八分之二十五
1/7+x=5/88+56x=3556x=27x=27/56
你好:1/7+x=3/8x+1/7=3/8x=3/8-1/7x=21/56-8/21x=13/56
十五分之二x加六分之一x等于三分之二十.两边同乘以30,得4x+5x=2009x=200x=200/9
一减六分之一加四十二分之一加五十六分之一加七十二分之一加九十分之一加一百一十分之1=1-1/6+1/6-1/7+1/7-1/8+1/8-1/9+1/9-1/10+1/10-1/11=1-1/11=10