(1)4-1-1=
(2)8-7-1=
(3)3-1-1=
(4)8-5-2=
(5)7-6-1=
(6)3-1-1=
(7)10-5-1=
(8)4-3-1=
(9)7-5-1=
(10)10-8-1=
(11)9-8-1=
(12)10-7-2=
(13)3-2-1=
(14)5-2-2=
(15)4-3-1=
(2)8-7-1=
(3)3-1-1=
(4)8-5-2=
(5)7-6-1=
(6)3-1-1=
(7)10-5-1=
(8)4-3-1=
(9)7-5-1=
(10)10-8-1=
(11)9-8-1=
(12)10-7-2=
(13)3-2-1=
(14)5-2-2=
(15)4-3-1=