5x=6.5
5x÷5=6.5÷5
x=1.3;
(2)
1 |
4 |
1 |
2 |
1 |
4 |
1 |
4 |
1 |
2 |
1 |
4 |
x=
1 |
4 |
(3)y-
2 |
5 |
3 |
4 |
y-
2 |
5 |
2 |
5 |
3 |
4 |
2 |
5 |
y=
23 |
20 |
(4)m+
3 |
5 |
7 |
10 |
m+
3 |
5 |
3 |
5 |
7 |
10 |
3 |
5 |
m=
1 |
10 |
1 |
4 |
1 |
2 |
2 |
5 |
3 |
4 |
3 |
5 |
7 |
10 |
1 |
4 |
1 |
2 |
1 |
4 |
1 |
4 |
1 |
2 |
1 |
4 |
1 |
4 |
2 |
5 |
3 |
4 |
2 |
5 |
2 |
5 |
3 |
4 |
2 |
5 |
23 |
20 |
3 |
5 |
7 |
10 |
3 |
5 |
3 |
5 |
7 |
10 |
3 |
5 |
1 |
10 |