Срочняк надо!!! #190

Question

Срочняк надо!!! #190

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Answer 1

1) х= 9/14 -5/14= 4/14
2)28/31 + х= 16/31 +14/31=28/31 + х= 30/31 х= 30/31 - 28/31 = 2/31
3)х/36= 7/36+ 5/36=12/36