问题
解答题
|
答案
(1)
+5 8
-1 6
,7 12
=
+15 24
-4 24
,14 24
=
;5 24
(2)
-4 7
+1 3
,5 21
=
-12 21
+7 21
,5 21
=
;10 21
(3)
-7 18
-2 9
,23 36
=
-14 36
-8 36
,23 36
=-
;17 36
(4)
+3 10
+3 8
,4 5
=
+12 40
+15 40
,32 40
=
.59 40