问题
解答题
|
答案
(1)x-
=1 3 3 4
x-
+1 3
=1 3
+3 4 1 3
x=1
;1 12
(2)x+
=1 4 5 7
x+
-1 4
=1 4
-5 7 1 4
x=
;13 28
(3)x-
=7 12 1 8
x-
+7 12
=7 12
+1 8 7 12
x=
;17 24
(4)x-
=19 10
x-
+9 10
=1+9 10 9 10
x=1
.9 10