问题 解答题

2x+0.4x=48

8x-x=14.7

3x+2.7=5.94

1.3x-0.44=0.6.

答案

(1)2x+0.4x=48

2.4X=48

2.4X÷2.4=48÷2.4

X=20;

(2)8x-x=14.7

7x=14.7

7x÷7=14.7÷7

x=2.1;

(3)3x+2.7=5.94

3x+2.7-27=5.94-2.7

3x=3.24

3x÷3=3.24÷3

x=1.08;

(4)1.3x-0.44=0.6

1.3x-0.44+0.44=0.6+0.44

1.3x=1.04

1.3x÷1.3=1.04÷1.3

x=0.8.

选择题
选择题