问题
解答题
|
答案
(1)x+
=1 8
,3 4
x+
-1 8
=1 8
-3 4
,1 8
x=
;5 8
(2)x-
=2 3
,1 6
x-
+2 3
=2 3
+1 6
,2 3
x=
;5 6
(3)0.2x=30,
0.2x÷0.2=30÷0.2,
x=150.
|
(1)x+
=1 8
,3 4
x+
-1 8
=1 8
-3 4
,1 8
x=
;5 8
(2)x-
=2 3
,1 6
x-
+2 3
=2 3
+1 6
,2 3
x=
;5 6
(3)0.2x=30,
0.2x÷0.2=30÷0.2,
x=150.