题目内容
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| (
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| 3
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36×
|
|
(多)
7 |
多0 |
7 |
多0 |
=
7 |
多0 |
=
7 |
多0 |
=70;
(2)
8 |
9 |
8 |
9 |
8 |
9 |
8 |
9 |
=
8 |
9 |
8 |
9 |
8 |
9 |
8 |
9 |
=多×
8 |
9 |
8 |
9 |
=
64 |
8多 |
(3)
3 |
t |
3 |
t |
=
3 |
t |
=
3 |
t |
=60;
(4)(
4 |
7 |
8 |
9 |
2 |
2t |
=
92 |
63 |
2 |
2t |
=
多84 |
多t7t |
(t)
多t |
2多 |
3 |
4 |
多0 |
2多 |
3 |
4 |
3 |
4 |
=(
多t |
2多 |
多0 |
2多 |
3 |
4 |
=
4 |
2多 |
3 |
4 |
=
多 |
7 |
(6)3
4 |
t |
=(3+
4 |
t |
=3×2t+
4 |
t |
=7t+20,
=9t;
(7)36×
34 |
3t |
=(3t+多)×
34 |
3t |
=3t×
34 |
3t |
34 |
3t |
=34+
34 |
3t |
=34
34 |
3t |
(8)
t |
6 |
t |
9 |
多8 |
t |
=
多t |
t4 |
多8 |
t |
=-
897 |
270 |
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