(3/8 - 2/3) * 48 - (5 - 7 4/7) : 1 13/14

(3/8 - 2/3) * 48 - (5 - 7 4/7) : 1 13/14 = - 12 2/3

1) 3/8 * 48 - 2/3 * 48 = 18 - 32 = - 14

2) 5 - 7 4/7 = - 2 4/7

3) - 2 4/7 : 1 13/14 = - 18/7 * 14/27 = - 36/27 = - 4/3 = - 1 1/3

4) - 14 - (- 1 1/3) = - 14 + 1 1/3 = - 12 2/3