问题
解答题
求未知数ⅹ. x-0.15x=8.5
|
答案
(1)x-0.15x=8.5,
(1-0.15)x=8.5,
0.85x=8.5,
x=10;
(2)
:x=3:12,3 4
3x=12×
,3 4
3x=9,
x=3.
求未知数ⅹ. x-0.15x=8.5
|
(1)x-0.15x=8.5,
(1-0.15)x=8.5,
0.85x=8.5,
x=10;
(2)
:x=3:12,3 4
3x=12×
,3 4
3x=9,
x=3.