题目内容
求未知数X.
| X÷0.83=2.3 | X×0.34=17 | 7.08-X=5.19. |
(1)X÷0.83=2.3,
X÷0.83×0.83=2.3×0.83,
x=1.909;
(2)X×0.34=17,
X×0.34÷0.34=17÷0.34,
x=50;
(3)7.08-X=5.19,
7.08-X+X=5.19+X,
5.19+X=7.08,
5.19+X-5.19=7.08-5.19,
X=1.89.
X÷0.83×0.83=2.3×0.83,
x=1.909;
(2)X×0.34=17,
X×0.34÷0.34=17÷0.34,
x=50;
(3)7.08-X=5.19,
7.08-X+X=5.19+X,
5.19+X=7.08,
5.19+X-5.19=7.08-5.19,
X=1.89.
练习册系列答案
相关题目