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2014-11-08T10:08:04+02:00
32 + a =  57
a= 57-32
a= 25
 96- a= 42
a= 96-42
a=54
a+63=85
a=85-63
a=22
a-24=55
a=24+55
a=79
3 5 3
2014-11-08T10:08:25+02:00
32+a=57
a=57-32
a=25
32+25=57

a+63=85
a=85-63
a=22
22+63=85

96-a=42
96-42=a
a=54
96-54=42

a-24=55
a=55+24
a=79
79-24=55
1 5 1