题目内容
求未知数X.
①X:
| ②3X+80%X=4.56. |
(1)x:
=51:17,
17x=
×51,
17x÷17=
×51÷17,
x=
,
(2)3x+80%x=4.56,
3.8x=4.56,
3.8x÷3.8=4.56÷3.8,
x=1.2.
| 3 |
| 5 |
17x=
| 3 |
| 5 |
17x÷17=
| 3 |
| 5 |
x=
| 9 |
| 5 |
(2)3x+80%x=4.56,
3.8x=4.56,
3.8x÷3.8=4.56÷3.8,
x=1.2.
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