1/9{1/7[1/5(x-1)+6]+8}=1
问题描述:
1/9{1/7[1/5(x-1)+6]+8}=1
为什么我算不出来啊
答
1/9{1/7[1/5(x-1)+6]+8}=1
1/7[1/5(x-1)+6]+8=9
1/7[1/5(x-1)+6]=1
1/5(x-1)+6=7
1/5(x-1)=1
x-1=5
x=6