问题
解答题
解方程
|
答案
(1)X+20%X=120,
1.2X=120,
1.2X÷1.2=120÷1.2,
X=100;
(2)X-
2 |
3 |
5 |
9 |
1 |
3 |
1 |
3 |
5 |
9 |
1 |
3 |
X=
5 |
3 |
(3)15X+30=180,
15X+30-30=180-30,
15X÷15=150÷15,
x=10;
(4)
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
x=16.
解方程
|
(1)X+20%X=120,
1.2X=120,
1.2X÷1.2=120÷1.2,
X=100;
(2)X-
2 |
3 |
5 |
9 |
1 |
3 |
1 |
3 |
5 |
9 |
1 |
3 |
X=
5 |
3 |
(3)15X+30=180,
15X+30-30=180-30,
15X÷15=150÷15,
x=10;
(4)
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
x=16.