题目内容
解方程.
(1)3x-
=11.625
(2)3x-1.2x=36.
(1)3x-
| 3 |
| 8 |
(2)3x-1.2x=36.
(1)3x-
=11.625,
3x-
+
=11.625+
,
3x=11.625+0.375,
3x=12,
3x÷3=12÷3,
x=4;
(2)3x-1.2x=36,
1.8x=36,
1.8x÷1.8=36÷1.8,
x=20.
| 3 |
| 8 |
3x-
| 3 |
| 8 |
| 3 |
| 8 |
| 3 |
| 8 |
3x=11.625+0.375,
3x=12,
3x÷3=12÷3,
x=4;
(2)3x-1.2x=36,
1.8x=36,
1.8x÷1.8=36÷1.8,
x=20.
练习册系列答案
相关题目