问题
解答题
|
答案
(1)x-
=5 12
,5 8
x-
+5 12
=5 12
+5 8
,5 12
x=
;25 24
(2)12x-9x=8.7,
3x=8.7,
3x÷3=8.7÷3,
x=2.9;
(3)m+
=1 2
,4 5
m+
-1 2
=1 2
-4 5
,1 2
m=
.3 10
|
(1)x-
=5 12
,5 8
x-
+5 12
=5 12
+5 8
,5 12
x=
;25 24
(2)12x-9x=8.7,
3x=8.7,
3x÷3=8.7÷3,
x=2.9;
(3)m+
=1 2
,4 5
m+
-1 2
=1 2
-4 5
,1 2
m=
.3 10