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- “”.
:
1=10                1=2
=                   2=12
1=7,5               4=4
=21                 5=1/2 4
1 2=3                5 =
2 =7,5
:
=5                       2==5
1=10                   1= =
=27                     2= 1/2
1=7,5                   2 ==4
1=2                     1=12
12=12

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