题目内容
解方程:
4X-15.5=4.5;
X-0.05X=5.7;
X=
;
X÷
=
.
4X-15.5=4.5;
X-0.05X=5.7;
| 7 |
| 10 |
| 14 |
| 25 |
X÷
| 3 |
| 4 |
| 15 |
| 16 |
4X-15.5=4.5
4x=4.5+15.5
4x=20
x=20÷4
x=5
X-0.05X=5.7
(1-0.05)x=5.7
0.95x=5.7
x=6
X=
x=
÷
x=
×
x=
X÷
=
x=
×
x=
故答案是x=5,x=6,x=
,x=
.
4x=4.5+15.5
4x=20
x=20÷4
x=5
X-0.05X=5.7
(1-0.05)x=5.7
0.95x=5.7
x=6
| 7 |
| 10 |
| 14 |
| 25 |
x=
| 14 |
| 25 |
| 7 |
| 10 |
x=
| 14 |
| 25 |
| 10 |
| 7 |
x=
| 4 |
| 5 |
X÷
| 3 |
| 4 |
| 15 |
| 16 |
x=
| 15 |
| 16 |
| 3 |
| 4 |
x=
| 45 |
| 64 |
故答案是x=5,x=6,x=
| 4 |
| 5 |
| 45 |
| 64 |
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