12 + ( 8 - 3 ) =
15 - ( 6 + 4 ) =
( 9 + 5 ) - 7 =
13 - ( 2 + 8 ) =
17 - (7 +0 )=
(14+1) +2=
(13-4)) +5 =
16 - (13-11)=
(11-5) +1=
10 + (4+5)=
6- (12-8)=
13+(4+3)=