题目内容
解方程或解比例.
(1)17x-12x=3.5(2)
:x=3:12.
(1)17x-12x=3.5(2)
| 3 |
| 4 |
(1)17x-12x=3.5,
5x=3.5,
5x÷5=3.5÷5,
x=0.7;
(2)
:x=3:12,
3x=
×12,
3x÷3=9÷3,
x=3.
5x=3.5,
5x÷5=3.5÷5,
x=0.7;
(2)
| 3 |
| 4 |
3x=
| 3 |
| 4 |
3x÷3=9÷3,
x=3.
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