51-(18+2)= 83+(10-3)= 21-(12-2)= 54-(18+2)=
73-(60-50)= 77+(12-8)= 11+(51-51)= 23-(18+2)=
82-(51+9)= 94-(58-48)= 26-(6+14)= 12+(65-35)=
84-(19-12)= 34-(22-4)= 84+(15-9)= 57-(8+2)=
83-(10+50)= 23-(1+19)= 40-(38+1)= 58+(45-43)
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