решите уравнения 1/7x +3/14- x=19 1/6x + 5/12x=8 целых 4/10

1/7x +3/14- x=19
-6/7x+3/14=19
-6/7x=19-3/14
-6/7x=18 11/14
x=18 11/14*(-7/6)
x=263/14*(-7/6)
x=-263/12
x=-21 11/12

1/6x + 5/12x=8 целых 4/10
2/12x+5/12x=8 2/5
7/12x=8 2/5
x=42/5*12/7
x=72/5
x=14 2/5