题目内容
解方程:
(
|
(1-25%)x=36 | 6×9-
|
x+20%x=40. |
①(
+
)x=
,
(
+
)x=
,
x=
,
x×
=
×
,
x=0.24;
②(1-25%)x=36,
x×
=36×
,
x=48;
③6×9-
x=26.8,
54-0.5x=26.8,
54-0.5x+0.5x=26.8+0.5x,
26.8-26.8+0.5x=54-26.8,
0.5x=23.2,
x=46.4.
5 |
6 |
5 |
8 |
7 |
20 |
(
20 |
24 |
15 |
24 |
7 |
20 |
35 |
24 |
7 |
20 |
35 |
24 |
24 |
35 |
7 |
20 |
24 |
35 |
x=0.24;
②(1-25%)x=36,
3 |
4 |
4 |
3 |
4 |
3 |
x=48;
③6×9-
1 |
2 |
54-0.5x=26.8,
54-0.5x+0.5x=26.8+0.5x,
26.8-26.8+0.5x=54-26.8,
0.5x=23.2,
x=46.4.
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