题目内容
| 求未知数X. 7X-4.7=5.3 | X:25=
|
(1)7X-4.7=5.3,
7X-4.7+4.7=5.3+4.7,
7x=10,
7x÷7=10÷7,
x=1
;
(2)X:25=
:75,
75x=
×25,
75x=30,
75x÷75=30÷75,
x=
.
7X-4.7+4.7=5.3+4.7,
7x=10,
7x÷7=10÷7,
x=1
| 3 |
| 7 |
(2)X:25=
| 6 |
| 5 |
75x=
| 6 |
| 5 |
75x=30,
75x÷75=30÷75,
x=
| 2 |
| 5 |
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