问题
解答题
|
答案
(1)x-
5 |
6 |
1 |
9 |
x-
5 |
6 |
5 |
6 |
1 |
9 |
5 |
6 |
x=
17 |
18 |
(2)
1 |
2 |
5 |
6 |
1 |
2 |
1 |
2 |
5 |
6 |
1 |
2 |
x=
1 |
3 |
(3)12x-9x=8.7,
3x=8.7,
3x÷3=8.7÷3,
x=2.9;
(4)2x+1=5,
2x+1-1=5-1,
2x÷2=4÷2,
x=2;
(5)3x-x=0.9,
2x=0.9,
2x÷2=0.9÷2,
x=0.45;
(6)x-
3 |
4 |
1 |
12 |
x-
3 |
4 |
3 |
4 |
1 |
12 |
3 |
4 |
x=
5 |
6 |