
1个回答
展开全部
(1)
x-
=
x-
+
=
+
x=
x×
=
×
x=2;
(2)
=
1.25x=0.75×4
1.25x=3
1.25x÷1.25=3÷1.25
x=2.4.
5 |
8 |
3 |
4 |
1 |
2 |
5 |
8 |
3 |
4 |
3 |
4 |
1 |
2 |
3 |
4 |
5 |
8 |
5 |
4 |
5 |
8 |
8 |
5 |
5 |
4 |
8 |
5 |
x=2;
(2)
0.75 |
x |
1.25 |
4 |
1.25x=0.75×4
1.25x=3
1.25x÷1.25=3÷1.25
x=2.4.
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