4 |
9 |
5 |
6 |
5 |
9 |
5 |
6 |
5 |
9 |
9 |
5 |
5 |
6 |
9 |
5 |
x=
3 |
2 |
(2)x+
7 |
9 |
16 |
9 |
16 |
9 |
9 |
16 |
9 |
16 |
x=
9 |
8 |
(3)11x-50%=16
11x-50%+50%=16+50%,
11x=16.5,
11x÷11=16.5÷11,
x=1.5;
(4)(x+
2 |
7 |
(x+
2 |
7 |
x+
2 |
7 |
x+
2 |
7 |
2 |
7 |
2 |
7 |
x=19
5 |
7 |
4 |
9 |
5 |
6 |
7 |
9 |
2 |
7 |
4 |
9 |
5 |
6 |
5 |
9 |
5 |
6 |
5 |
9 |
9 |
5 |
5 |
6 |
9 |
5 |
3 |
2 |
7 |
9 |
16 |
9 |
16 |
9 |
9 |
16 |
9 |
16 |
9 |
8 |
2 |
7 |
2 |
7 |
2 |
7 |
2 |
7 |
2 |
7 |
2 |
7 |
5 |
7 |