Пожалуйста)))?!!!!!?!!!!

Question

Пожалуйста)))?!!!!!?!!!!

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Answer 1

4 1/2 : х + 3/4 = 2 19/28
9/2 : х = 2 19/28 - 3/4
9/2 : х = 75/28 - 21/28
9/2 : х = 54/28
х = 9/2 : 54/28
х = 9/2 * 28/54
х = 7/3
х = 2 1/3