题目内容
a |
b |
() |
() |
因为:
=1.4,
即:
=
,a=7,b=5,
①(7-5)÷7,
=
;
②(7-5)÷5,
=
,
=40%;
故答案为:
,40.
a |
b |
即:
a |
b |
7 |
5 |
①(7-5)÷7,
=
2 |
7 |
②(7-5)÷5,
=
2 |
5 |
=40%;
故答案为:
2 |
7 |
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题目内容
a |
b |
() |
() |
a |
b |
a |
b |
7 |
5 |
2 |
7 |
2 |
5 |
2 |
7 |