x+15%x=3.22 ,1⼀2x-25%x=10 ,x*(1-37.7%)=5⼀8 ,40%x=16 ,19-120%x=7 ,50%x=22解方程

2025-05-17 15:15:06
推荐回答(2个)
回答1:

x+15%x=3.22 ,
0.15x= 3.22
x= 322/15

1/2x-25%x=10 ,
0.5x- 0.25x =10
0.25x =10
x= 40

x*(1-37.7%)=5/8
0.623x= 0.625
x=1

,40%x=16 ,
0.4x = 16
x= 40

19-120%x=7 ,
19- 1.2x = 7
1.2x = 12
x= 10

50%x=22
x= 22×2
x= 44

回答2:

x+15%x=3.22 , x=2.8
1/2x-25%x=10 , x=2/15
,x*(1-37.7%)=5/8 , x=5/8(1-37.7%)≈1
,40%x=16 ,x =40
19-120%x=7, x=10
,50%x=22, x=44