问题
解答题
求未知数X的值 ①
|
答案
①
x-3 4
=1.75,3 8
x-3 4
+3 8
=1.75+3 8
,3 8
x÷3 4
=3 4
÷17 8
,3 4
x=
;17 6
②0.36:8=x:25,
8x=0.36×25,
8x=9,
8x÷8=9÷8,
x=
.9 8
求未知数X的值 ①
|
①
x-3 4
=1.75,3 8
x-3 4
+3 8
=1.75+3 8
,3 8
x÷3 4
=3 4
÷17 8
,3 4
x=
;17 6
②0.36:8=x:25,
8x=0.36×25,
8x=9,
8x÷8=9÷8,
x=
.9 8