解方程. 6+
x+
25%+x=75 x÷
|
(1)6+
7 |
10 |
6+
7 |
10 |
7 |
10 |
7 |
10 |
10 |
7 |
10 |
7 |
x=
40 |
7 |
(2)x+
3 |
5 |
8 |
5 |
8 |
5 |
5 |
8 |
5 |
8 |
x=
15 |
2 |
(3)25%+x=75,
0.25+x=75,
0.25+x-0.25=75-0.25,
x=74.75;
(4)x÷
5 |
8 |
5 |
4 |
x÷
5 |
8 |
5 |
8 |
5 |
4 |
5 |
8 |
x=
25 |
32 |
解方程. 6+
x+
25%+x=75 x÷
|
(1)6+
7 |
10 |
6+
7 |
10 |
7 |
10 |
7 |
10 |
10 |
7 |
10 |
7 |
x=
40 |
7 |
(2)x+
3 |
5 |
8 |
5 |
8 |
5 |
5 |
8 |
5 |
8 |
x=
15 |
2 |
(3)25%+x=75,
0.25+x=75,
0.25+x-0.25=75-0.25,
x=74.75;
(4)x÷
5 |
8 |
5 |
4 |
x÷
5 |
8 |
5 |
8 |
5 |
4 |
5 |
8 |
x=
25 |
32 |