题目内容
50%x-30=52
4.5x+3.8x=16.6
:x=
:
=20%
4.5x+3.8x=16.6
| 1 |
| 4 |
| 1 |
| 2 |
| 1 |
| 6 |
| x |
| 45 |
(1)50%x-30=52
0.5x-30=52
0.5x-30+30=52+30
0.5x=82
0.5x÷0.5=82÷0.5
x=164;
(2)4.5x+3.8x=16.6
8.3x=16.6
8.3x÷8.3=16.6÷8.3
x=2;
(3)
:x=
:
x=
×
x=
x×2=
×2
x=
;
(4)
=20%
=
5x=45
5x÷5=45÷5
x=9.
0.5x-30=52
0.5x-30+30=52+30
0.5x=82
0.5x÷0.5=82÷0.5
x=164;
(2)4.5x+3.8x=16.6
8.3x=16.6
8.3x÷8.3=16.6÷8.3
x=2;
(3)
| 1 |
| 4 |
| 1 |
| 2 |
| 1 |
| 6 |
| 1 |
| 2 |
| 1 |
| 4 |
| 1 |
| 6 |
| 1 |
| 2 |
| 1 |
| 24 |
| 1 |
| 2 |
| 1 |
| 24 |
x=
| 1 |
| 12 |
(4)
| x |
| 45 |
| x |
| 45 |
| 1 |
| 5 |
5x=45
5x÷5=45÷5
x=9.
练习册系列答案
相关题目