126/8-у=105/5
63/4-у=21
-у=21-63/4
-у=84/4-63/4
-у=21/4
-у=5 1/4
у=-5 1/4=-5,25
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126/8-у=105/5
63/4-у=21
-у=21-63/4
-у=84/4-63/4
-у=21/4
-у=5 1/4
у=-5 1/4=-5,25