What rational number is equivalent to the expression 69 2/9 - 31 1/9 - (-12 4/9)?

69 (2/9) - 31 (1/9) - [-12 (4/9)]

= 69 (2/9) - 31 (1/9) + 12 (4/9)

= [69 - 31 + 12] + [(2/9) - (1/9) + (4/9)]

= 50 + [(2 - 1 + 4)/9]

= 50 (5/9)

( 69 -31+12)+(2/9 - 1/9+ 4/9) = ...