Решите уравнения : 1) 5/6*х=1; 2) 2/5*k+1/5*k=1; 3) 2/3*z-5/6=1/6;

1) 5/6 * х = 1
х = 1: 5/6
х = 6/5

2) 2/5*k +1/5*k = 1
3/5*k = 1
k = 1 : 3/5
k = 5/3

3) 2/3*z - 5/6*z = 1/6
4/6*z - 5/6*x = 1/6
-1/6*z = 1/6
z = -1