Don't need it

 -6 + (14 + 2[60 - 9(1 + 3)]) =

-6 + (14 + 2 [60  - 9(4) ] ) =

-6 + (14 + 2 [ 60 - 36 ] )  =

-6  + ( 14  + 2 [ 24] )  =

-6 + ( 14 + 48 )  =

-6 + 62  =

56

(6^2 - 2^2) / 8  =

(36 - 4)  / 8  =

32 / 8 =

4

7/3 + 3 (3/4 - 2/3)^2  =

7/3 + 3 ( 9/12 - 8/12)^2 =

7/3 + 3 (1/12)^2  =

7/3 + 3 (1/44)  =

7/3 + 3/144  =

7/3 + 1/48   =   

[7 * 16 ] / [3 * 16]  +  1/48  =

[ 112] /[48] +  1/48 =

113 / 48

6/7 + 6(1/2 - 1/3)^2  =

6/7 + 6 ( 3/6 - 2/6)^2 =

6/7 + 6 (1/6)^2 =

6/7 + 6 (1/36) =

6/7 + 6/36 =

6/7 + 1/6 =

[ 6 * 6] / [ 6 * 7]  +  [ 1 * 7] / [ 6 * 7]  =

36 /42  + 7 /42  =

43 /42