0.3/X=9/0.3
问题描述:
0.3/X=9/0.3
答
0.3/X=9/0.3
9x=0.09
x=0.09÷9
x=0.01
0.3/X=9/0.3
0.3/X=9/0.3
9x=0.09
x=0.09÷9
x=0.01