题目内容
当a=______时,式子(29-8a)×
的值是10,当a=______时,式子(29-8a)÷
的值是45.
| 2 |
| 5 |
| 3 |
| 5 |
(1)(29-8a)×
=10,
29-8a=10×
,
29-25=8a,
4÷8=a,
a=
;
(2)(29-8a)÷
=45,
29-8a=45×
,
29-27=8a,
a=2÷8,
a=
.
故答案为:
,
.
| 2 |
| 5 |
29-8a=10×
| 5 |
| 2 |
29-25=8a,
4÷8=a,
a=
| 1 |
| 2 |
(2)(29-8a)÷
| 3 |
| 5 |
29-8a=45×
| 3 |
| 5 |
29-27=8a,
a=2÷8,
a=
| 1 |
| 4 |
故答案为:
| 1 |
| 2 |
| 1 |
| 4 |
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