9 г в
50/75 и 20/120 = 2*2/3+1/6=4/6+1/6=5/6
6/16 и 12/27=9*3/8+8*4/9=27/72+32/72=59/72
7а 3/29+1/29+7/29+6/26+4/29= 15/29+6/26=15/29+3/13=195/377+87/377=282/377
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9 г в
50/75 и 20/120 = 2*2/3+1/6=4/6+1/6=5/6
6/16 и 12/27=9*3/8+8*4/9=27/72+32/72=59/72
7а 3/29+1/29+7/29+6/26+4/29= 15/29+6/26=15/29+3/13=195/377+87/377=282/377