问题
解答题
|
答案
(1)x-
=3 8
,13 8
x-
+3 8
=3 8
+13 8
,3 8
x=2;
②
=28 x
,0.4 0.1
0.4x=28×0.1,
0.4x=2.8,
0.4x÷0.4=2.8÷0.4,
x=7.
|
(1)x-
=3 8
,13 8
x-
+3 8
=3 8
+13 8
,3 8
x=2;
②
=28 x
,0.4 0.1
0.4x=28×0.1,
0.4x=2.8,
0.4x÷0.4=2.8÷0.4,
x=7.