Решите уравнение. 1) -1/3х - 1/4х + 1/5х = 1(3/15) 2)

1) -1/3х - 1/4х + 1/5х = 1(3/15);
-20/60х - 15/60х + 12/60х = 23/15;
-23/60х = 23/15;
х = 23/15 : (-23/60);
х = -4.

2) 2(5/6)х - 3(3/4)х - 1(5/12)х = -1(5/9);
2(10/12)х - 3(9/12)х - 1(5/12)х = -1(5/9);
-2(1/3)х = -1(5/9);
х = (-1(5/9)) : (-2(1/3));
х = 2/3.