Question

x+1/x-1-x-1/x+1/18x+3/x*-1​

Answer 1

Answer:

1-1=0

1-0=1

1+1=2

18+2=20

20+3=23

23-1=22

1/1=1

1/1=1

1/1=1

1/18=18

18+3=21

21/1=21

21*1= 21 answer ok