Решите уравнения a) 9/z=2 б) 22 6/43-y=14 7/15+2 8/15

Question

Решите уравнения a) 9/z=2 б) 22 6/43-y=14 7/15+2 8/15

Answer 1

9/z = 2
z = 9/2 = 4 1/2

22 6/43 - у = 14 7/15 + 2 8/15
22 6/43 - у = 16 15/15
22 6/43 - у = 17
у = 22 6/43 - 17
у = 22 6/43 - 731/43
у = 952/43 - 731/43
у = 221/43
у = 5 6/43