题目内容
求未知数x.
| 60:x=3.2:0.8 | 8:13=20:x. |
(1)60:x=3.2:0.8,
3.2x=60×0.8,
3.2x=48,
3.2x÷3.2=48÷3.2,
x=15;
(2)8:13=20:x,
8x=13×20,
8x=260,
8x÷8=260÷8,
x=32.5.
3.2x=60×0.8,
3.2x=48,
3.2x÷3.2=48÷3.2,
x=15;
(2)8:13=20:x,
8x=13×20,
8x=260,
8x÷8=260÷8,
x=32.5.
练习册系列答案
相关题目