1减3分之1X=4分之1
问题描述:
1减3分之1X=4分之1
答
1-x/3=1/4
x/3=1-1/4
x/3=3/4
x=9/4
1减3分之1X=4分之1
1-x/3=1/4
x/3=1-1/4
x/3=3/4
x=9/4