题目内容
| 看谁算得都对 x+
| x+25%x=0.375 |
|
|
(1)x+
x=1
1
x=1
1
x÷1
=1
÷1
x=
;
(2)x+25%x=0.375
1.25x=0.375
1.25x÷1.25=0.375÷1.25
x=0.3;
(3)
x-
x=1.4
x=1.4
x÷
=1.4÷
x=3;
(4)
x-
x=
x=
x÷
=
÷
x=
.
| 7 |
| 9 |
| 1 |
| 3 |
1
| 7 |
| 9 |
| 1 |
| 3 |
1
| 7 |
| 9 |
| 7 |
| 9 |
| 1 |
| 3 |
| 7 |
| 9 |
x=
| 3 |
| 4 |
(2)x+25%x=0.375
1.25x=0.375
1.25x÷1.25=0.375÷1.25
x=0.3;
(3)
| 2 |
| 3 |
| 1 |
| 5 |
| 7 |
| 15 |
| 7 |
| 15 |
| 7 |
| 15 |
| 7 |
| 15 |
x=3;
(4)
| 2 |
| 3 |
| 3 |
| 8 |
| 1 |
| 7 |
| 7 |
| 24 |
| 1 |
| 7 |
| 7 |
| 24 |
| 7 |
| 24 |
| 1 |
| 7 |
| 7 |
| 24 |
x=
| 24 |
| 49 |
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