x-0.7x=0.24.
问题描述:
x-0.7x=0.24.
答
(1-0.7)x=0.24
0.3x=0.24
x=0.24/0.3=0.8
x-0.7x=0.24.
(1-0.7)x=0.24
0.3x=0.24
x=0.24/0.3=0.8