X+1/2X=45,那X是多少
问题描述:
X+1/2X=45,那X是多少
答
X+1/2X=45
3/2x=45
x=45÷3/2
x=45*2/3
x=30
X+1/2X=45,那X是多少
X+1/2X=45
3/2x=45
x=45÷3/2
x=45*2/3
x=30