47+(32-22)= 70-(7+2)= 82+(10-3)= 72-(60-50)=
68-(12-8)= 44-(5+4)= 89-(49+1)= 15+(18-10)=
82-(26+3)= 32-(10+6)= 12-(9+1)= 67-(2+3)=
52+(20-10)= 84-(27+2)= 40-(10-8)= 63+(12-8)=
41-(17+2)= 68-(25+5)= 30-(19-5)=
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