tolong bantu nomor ,13,14 pakai cara

6. 125 7/12+ 4 5/12= (125+ 4) + [7/12 + 5/12]
= 129+ 12/12 =129 + 1 =130

11. 4 2/3+ 1 1/2 + 3 3/4 = (4+1 + 3) + [2/3+ 1/2+ 3/4]
=8 + [(8+6+9)/12]
=8 + 23/12 = 9 11/12