[x-12] 除以8=66
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(x/10+x/8)×4+5000=x9x/40×4+5000=x9x/10+5000=xx-9x/10=5000x/10=5000x=5000÷1/10x=50000
(8x+9)/(x^2+x-6)=a/(x+3)+b/(x-2)8x+9=a(x-2)+b(x+3)8x+9=(a+b)x+(3b-2a)建立方程组a+b=83b-2a=9得到解a=3b=5
方程x除以2+x除以6+x除以12+x除以2008乘2009再问:加上=2008,x=?再答:x(1-1/2+1/2-1/3+1/3-1/4+……+1/2008-1/2009)=2008x(1-1/2
数学之美团为你解答x/(x-2)-1=8/(x²-4)同乘以x²-4x(x+4)-(x²-4)=8x²+4x-x²+4=84x=4x=1经检验,x=1
(x+7)/(x+6)+(x+9)/(x+8)=(x+10)/(x+9)+(x+6)/(x+5)(x+9)/(x+8)-(x+10)/(x+9)=(x+6)/(x+5)-(x+7)/(x+6)[(x+
8÷0.01=2x/3800×3=2xx=1200
x/15+24/60=x/12-15/60x=39
X除以(X-2)+(X-9)除以(X-7)=(X+1)除以(X-1)+(X-8)除以(X-6)(x-2+2/x-2)+(x-7-2/x-7)=(x-1+2/x-1)+(x-6-2/x-6)1+(2/x
X=28再答:请采纳,谢谢
x/10=y/8=z/9=(x+y+z)/(8+9+10)=(y+z)/(8+9)所以:(x+y+z)/(8+9+10)=(y+z)/(8+9)所以:(x+y+z)/(y+z)=(8+9+10)/(8
(12-x)/(13-x)=8/138*(13-x)=13*(12-x)104-8x=156-13x5x=52x=10.4
x=9/2
x*15/8=9/8x=5/33/4x=7/12x=9/7
12.8X÷7=8等式两边同时乘以7,可得:12.8X=56等式两边同时除以12.8可得:X=4.375综上的述,原方程的解为X=4.375.
五分之二除以x=82/5÷x=8x=2/5÷8x=1/20
11/12x=3/81/x=3/8×12/111/x=9/22x=22/9再问:x/1是什么意思再答:是1/x,除以一个数等于乘以这个数的倒数,x的倒数是1/x
x/12-2x-4/20=3x+4/8-1你的题目是这样的么?去分母就是乘以公分数60,就是5x-120x-12=180x+30-60
即x/8-1+3=x/7x/7-x/8=3-1x/56=2x=2÷1/56x=112
3x÷8/19=193x×19/8=193x/8=1x=8/3