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2014-03-25T16:06:38+02:00
A+b/2=41.1
a+b=82.2
a-b=32.4 =>a=32.4+b

32.4+b+b=82.2
2b=82.2-32.4
2b=49.8
b=24.9

a=32.4+24.9
a=57.3
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