Negative four and one-fifth minus negative thirteen and one-tenth

- [ 4 + 1/5 ]  - -[13 + 1/10]=

-[ 4 + 1/5 ] + [ 13 + 1/10 ] =

13 - 4 - 1/5 + 1/10  =       .......  [1/5 = 2/10 ]......

9 - 2/10 + 1/10  =

9 - 1/10  =

8 + 9/10