Question

Помогите решить уравнения

Answer 1

1)8/x/5 = 18/7 |*35

7(8/x) = 5*18

56/x = 90

x = 28/45

2)(x+1)/3 = (x-1)/2 |*6

2x+2 = 3x -3

2x-3x = -2-3

-x = -5

x=5