问题
解答题
x+
x-(
|
答案
(1)x+
=3 14
,13 21
x+
-3 14
=3 14
-13 21
,3 14
x=
;17 42
(2)x-(
+2 5
)=1 3
,7 30
x-
=11 15
,7 30
x-
+11 15
=11 15
+7 30
,11 15
x=
.29 30
x+
x-(
|
(1)x+
=3 14
,13 21
x+
-3 14
=3 14
-13 21
,3 14
x=
;17 42
(2)x-(
+2 5
)=1 3
,7 30
x-
=11 15
,7 30
x-
+11 15
=11 15
+7 30
,11 15
x=
.29 30