(7/12-3/16-5/24)+(1/4²)=?

Question

(7/12-3/16-5/24)+(1/4²)=?

Answer 1

1)7/12-3/16=28/48-9/48=19/48
2)19/48-5/24=19/48-10/48=9/48
3)1/4^2=1/16
4)9/48:1/16=9/48*16/1=3

Answer 2

(7/12-3/16-5/24)+(1/4)²=1/4
1) 7/12-3/16-5/24=28/48-9/48-10/48=9/48=3/16
2) 1/4·1/4=1/16
3) 1/16+3/16=4/16=1/4