Question

15X+35X-(150+12*15)=(150+15*35)*10%

Answer 1

15X+35X-(150+12*15)=(150+15*35)*10%

50x - 330 = 67.5

x=7.95

(50/1+40/1)*20+50/1X=1

题目写法不对,应为

(1/50 + 1/40) * 20 + x/50 = 1

2/5 + 1/2 + x/50 = 1

x/50 = 1/10

x=5