0.5x=0.3(80-x)等于多少,

分类: 作业答案 • 2022-09-25 15:38:09

问题描述：

0.5x=0.3(80-x)等于多少,

答

0.5x = 0.3(80-x)
0.5x/0.3 = 80-x
0.5x/0.3+x = 80
(0.5/0.3+1)x = 80
x = 80/(0.5/0.3+1)
x = 30

答

0.5X=24-0.3X
0.5x+0.3x=24
0.8x=24
x=30

答

0.5x=0.3(80-x)
0.5x=24-0.3x
0.8x=24
x=30