问题
解答题
|
答案
(1)130%X+X=460,
2.3X=460,
2.3X÷2.3=460÷2.3,
X=200;
(2)2X-4×
=3 8
,1 2
2X-
=3 2
,1 2
2X-
+3 2
=3 2
+1 2
,3 2
2X÷2=2÷2,
X=1;
(3)X-15%X=3.74,
0.85X=3.74,
0.85X÷0.85=3.74÷0.85,
X=4.4.
|
(1)130%X+X=460,
2.3X=460,
2.3X÷2.3=460÷2.3,
X=200;
(2)2X-4×
=3 8
,1 2
2X-
=3 2
,1 2
2X-
+3 2
=3 2
+1 2
,3 2
2X÷2=2÷2,
X=1;
(3)X-15%X=3.74,
0.85X=3.74,
0.85X÷0.85=3.74÷0.85,
X=4.4.