题目内容
5.4+2X=8.6;
2.5:5=x:8;
0.2=1-
.
2.5:5=x:8;
0.2=1-
| X |
| 24 |
(1)5.4+2X=8.6,
5.4+2X-5.4=8.6-5.4,
2x=3.2,
2x÷2=3.2÷2,
x=1.6;
(2)2.5:5=x:8,
5x=2.5×8,
5x÷5=20÷5,
x=4;
(3)0.2=1-
,
0.2+
=1-
+
,
0.2+
-0.2=1-0.2,
×24=0.8×24,
x=19.2.
5.4+2X-5.4=8.6-5.4,
2x=3.2,
2x÷2=3.2÷2,
x=1.6;
(2)2.5:5=x:8,
5x=2.5×8,
5x÷5=20÷5,
x=4;
(3)0.2=1-
| X |
| 24 |
0.2+
| x |
| 24 |
| X |
| 24 |
| x |
| 24 |
0.2+
| x |
| 24 |
| x |
| 24 |
x=19.2.
练习册系列答案
相关题目