问题
解答题
|
答案
(1)X-
=5 6
,5 6
X-
+5 6
=5 6
+5 6
,5 6
X=
;5 3
(2)8X=4,
8X÷8=4÷8,
X=0.5;
(3)12÷X=9,
12÷X×X=9×X,
9X=12,
9X÷9=12÷9,
X=
;4 3
(4)12.7+X=15.7,
12.7+X-12.7=15.7-12.7,
X=3.
|
(1)X-
=5 6
,5 6
X-
+5 6
=5 6
+5 6
,5 6
X=
;5 3
(2)8X=4,
8X÷8=4÷8,
X=0.5;
(3)12÷X=9,
12÷X×X=9×X,
9X=12,
9X÷9=12÷9,
X=
;4 3
(4)12.7+X=15.7,
12.7+X-12.7=15.7-12.7,
X=3.