问题
解答题
|
答案
(1)X:4.8=4:32,
32x=4.8×4,
32x=19.2,
32x÷32=19.2÷32,
x=0.6;
(2)
1.6 |
0.9 |
x |
4 |
1.6x=0.9×4,
1.6x=3.6,
1.6x÷1.6=3.6÷1.6,
x=2.15;
(3)
2 |
3 |
9 |
10 |
3 |
5 |
9 |
10 |
2 |
3 |
3 |
5 |
9 |
10 |
2 |
5 |
9 |
10 |
9 |
10 |
2 |
5 |
9 |
10 |
x=
4 |
9 |
(4)2.5:4=1.25:X,
2.5x=4×1.25,
2.5x=5,
2.5x÷2.5=5÷2.5,
x=2.