中科新闻网小说,打眼的作者:解方程~！！！
来源：百度文库 编辑：中科新闻网 时间：2024/05/12 01:07:50
x+7 x+9 x+10 x+6
------ + ------ = ------ + -----
x+6 x+8 x+9 x+5
------ + ------ = ------ + -----
x+6 x+8 x+9 x+5
[x+7]/[x+6]+[x+9]/[x+8]=[x+10]/[x+9]+[x+6]/[x+5]
1/[x+6]+1/[x+8]+2=1/[x+9]+1/[x+5]+2
1/[x+6]+1/[x+8]=1/[x+9]+1/[x+5]
[x+5-(x+6)]/[x+6][x+5]=[x+8-(x+9)]/[x+8][x+9]
1/[x+5][x+6]=1/[x+8][x+9]
xx+11x+30=xx+17x+72
-6x=42
x= -7
[x+7]/[x+6]+[x+9]/[x+8]=[x+10]/[x+9]+[x+6]/[x+5]
1/[x+6]+1/[x+8]+2=1/[x+9]+1/[x+5]+2
1/[x+6]+1/[x+8]=1/[x+9]+1/[x+5]
[x+5-(x+6)]/[x+6][x+5]=[x+8-(x+9)]/[x+8][x+9]
1/[x+5][x+6]=1/[x+8][x+9]
xx+11x+30=xx+17x+72
-6x=42
x= -7