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 = 1х = 1: 5/6х = 6/52) 2/5*k +1/5*k = 13/5*k = 1k = 1 : 3/5k = 5/33) 2/3*z - 5/6*z = 1/64/6*z - 5/6*x = 1/6-1/6*z = 1/6z = -1