(40-x)⼀(50+x)=50%这个方程怎么解

2025-01-07 00:37:01
推荐回答(4个)
回答1:

(40-x)/(50+x)=50%
(40-x)/(50+x)=0.5
40-x=0.5(50+x)
40-x=25+0.5x
0.5x+x=40-25
1.5x=15
x=15/1.5
x=10

回答2:

(40-x)/(50+x)=50%

40-x=25+50%x

-x-50%x=25-40

-1.5x=-15

x=10

回答3:

(40-x)/(50+x)=50%
2*(40-X)=(50+X)*1
80-2X=50+X
3X=30
X=10

回答4:

(40-x)/(50+x)=50%
40-x=50%(50+x)
40-x=25+0.5x
1.5x=15
x=10