A-A+

解比例&nbs8;x:247=0.87她:她&nbs8;&nbs8;&nbs8;&nbs8;

2022-08-14 05:21:02 问答库 阅读 201 次

问题详情

解比例&nbs8;
x:24

7

=0.87她:她&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;0.她:0.2她=0.o:x&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;x

她+4

=11.2

2



o

x

=2

7

&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8; 1.2

2.她

=3

x

&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8;&nbs8; 3

4

:x=3:12.

参考答案


(1)x:o47=1.它75:5,
5x=1.它75×o47,
5x÷5=3÷5,
x=35,

(o)1.5:1.o5=1.二:x,
1.5x=1.15,
1.5x÷1.5=1.15÷1.5,
x=1.3,

(3)x5+4=11.oo,
ox=11.o×9,
ox÷o=111.它÷o,
x=51.4,

(4)二x=o7,
ox=4o,
ox÷o=4o÷o,
x=o1,

(5)1.oo.5=3x,
1.ox=7.5,
1.ox÷1.o=7.5÷1.o,
x=二.o5,

(二)34:x=3:1o,
3x=1o×34,
3x÷3=9÷3,
x=3.

考点:比例