问题
解答题
解方程(或比例). 3.2x-4×3=52
|
答案
(1)3.2x-4×3=52,
3.2x-12=52,
3.2x-12+12=52+12,
3.2x=64,
3.2x÷3.2=64÷3.2,
x=20;
(2)
1 |
4 |
1 |
8 |
1 |
8 |
1 |
4 |
1 |
8 |
5 |
2 |
1 |
8 |
5 |
2 |
x=20.
解方程(或比例). 3.2x-4×3=52
|
(1)3.2x-4×3=52,
3.2x-12=52,
3.2x-12+12=52+12,
3.2x=64,
3.2x÷3.2=64÷3.2,
x=20;
(2)
1 |
4 |
1 |
8 |
1 |
8 |
1 |
4 |
1 |
8 |
5 |
2 |
1 |
8 |
5 |
2 |
x=20.