Question

помогите кому не лень​

Answer 1

Ответ:

18/30 - х = 10/30

х = 18/30 - 10/30

х = 8/30

19/67 - х = 9/67

х = 19/67 - 9/67

х = 10/67

5/15 - х = 14/15 - 10/15

5/15 - х = 4/15

х = 5/15 - 4/15

х = 1/15

42/60 + у = 57/60

у = 57/60 - 42/60

у = 15/60

х + 26/70 = 64/70 - 5/70

х + 26/70 = 59/70

х = 59/70 - 26/70

х = 33/70

х + 27/46 = 37/46

х  = 37/46 - 27/46

х = 10/46