25+63-75 =
15+57+21 =
-56-23=
14-12-2=
33+35+37=
55+35-25 =
36-25+19 =
10+30+60 =
24-23+49 =
10+78-31=
-56-23= 14-12-2 =
12+13+25 =
45+25-39 =
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