ΨEENΝ:
7 + (4 + 3) = 14
(5 + 7) + 6 = 18
9 + (7 4) = 12
(7 + 8) 4 = 11
14 (3 + 4) = 7
(16 8) + 2 =10
18 (12 3)= 9
(15 6) + 2 =11
6 + (5 + 7) =18
(20 + 10) + 30 =60
9 + (6 + 4) =19
(15 5) 3 = 7