问题
解答题
解方程.
0.75:x=1.25:0.25. |
答案
(1)
x+3 4
=1 8
,1 2
x+3 4
-1 8
=1 8
-1 2
,1 8
x=3 4
,3 8
x÷3 4
=3 4
÷3 8
,3 4
x=
;1 2
(2)0.75:x=1.25:0.25,
1.25x=0.75×0.25,
1.25x=0.1875,
1.25x÷1.25=0.1875÷1.25,
x=0.15.