Помогите с уравнениями

Question

Помогите с уравнениями

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Answer 1

8 3/4 - х= 3 5/16
х= 8 3/4 - 3 5/16
х= 8 12/16 - 3 5/16
х=5 7/16

х-9 3/7 = 6 5/14 - 5 8/21
х-9 3/7 = 6 15/42 - 5 16/42
х-9 3/7 = 5 57/42 - 16/42
х-9 3/7 = 41/42
х=41/42 + 9 3/7
х=41/42 + 66/7
х=41/42 + 396/42
х=437/42
х=10 17/42

Answer 2

8 3/4-х=3 5/16
х=8 3/4-3 5/16
х=35/4-53/16
х=140/16-53/16
х=87/16=5 7/16