1/7【1/5(x+2/3 + 4)+6】+8=9

问题描述:

1/7【1/5(x+2/3 + 4)+6】+8=9

1/7【1/5(x+2/3 + 4)+6】+8=9
1/7【1/5(x+2/3 + 4)+6】=9-8
1/7【1/5(x+2/3 + 4)+6】=1
1/5(x+2/3 + 4)+6=7
1/5(x+2/3 + 4)=7-6
1/5(x+2/3 + 4)=1
x+2/3+4=5
x+2/3=1
x+2=3
x=1