[124-6x]除以4=7-搜答案-神马作文网

(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+

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

两边乘以6得：2（3x-1）=6-（4x-1）去括号：6x-2=6-4x+1合并同类型：6x-2=7-4x移项：6x+4x=7+2合并同类型：10x=9把未知数系数变成1：x=0.9

1除以(x的平方+3x+2)+1除以(x平方+5x+6)+1除以(x平方+7x+12)=1/（x+1）（x+2）+1/(x+2)(x+3)+1/(x+3)(x+4)=1/(x+1)-1/(x+2)+1

3-1除以3x-1=4除以6x-23-1/(3x-1)=2/(3x-1)两边同乘以(3x-1)得：3(3x-1)-1=23x-1=13x=2x=2/3

答：6/x=(1/2)/(1/5)6/x=5/25x=12x=12/5经检验,是原分式方程的根0.2/25=4/x所以：0.2x=4*250.2x=100x=500经检验,是原分式方程的根

原式=4(x-3)/(x-5)(x+1)*(x+1)(x-1)/2(x-3)*(x-1)=2/(x-5)(x-1)*(x-1)=2/(x-5)=2/(7-5)=1

即x(7/123456-4/98765)=0x=0÷(7/123456-4/98765)x=0

经化简得（x+4)(x+7)=(x+5）（x+6)无解!再问：怎么能把1约掉再答：通分啊！两边就消去了！再问：怎么通分，具体步骤再答：上传了，你可以看看具体步骤再问：哪上传了再问：就是上面的吗再答：你

你题目发错了吧

1÷(2÷3)÷(3÷4)÷(4÷5)÷(5÷6)÷(6÷7)=1÷2×3÷3×4÷4×5÷5×6÷6×7=1÷2×7=0.5×7=3.5明白请采纳,有新问题请求助,

（x+17）除以3-（3x-7）除以4=2两边乘以124(x+17)-3(3x-7)=244x+68-9x+21=244x-9x=24-68-21-5x=-65x=-65/(-5)x=13

4×7=28,(124-28)/6=16

两边乘355(3x-4)=7(3x+3)15x-20=21x+2121x-15x=-20-216x=-41x=-41/6

x除以0.05除以2=（4500-x）除以0.02除以4化简成8x=10（4500-x）是对的,8x=45000-10x18x=45000x=2500

x=10

7/4÷（x+8/1）=161/967/4÷（x+8/1）=161/96161X+1288=168X=1120／16151-（24×x-x×15）÷6=48X=2

共有5种算法：1/(2/3)/4/(5/6/7/8)/9=2.81/(2/(3/4))/(5/6/7/8)/9=2.81/(2/(3/4/5)/6/7/(8/9))=2.81/(2/(3/4/(5/6

3/5除以6/7X等于X除以5/43/5÷6/7x=x÷5/43/5*5/4=6/7x*x3/4=6/7x^2x^2=3/4÷6/7x^2=3/4*7/6x^2=7/8x=根号7/2根号2x=根号14

2分之7除以4X=2.5整理后得8X分之7=2.5解得X=0.175