3/7х+2/3х-4/12х, якщо х = 2 4/19 то 3/7×42/19+2/3×42/19-4/12×42/19= 18/19+28/19- 14/19= 42/19-14/19= 32/19
3/7х+2/3х-4/12х, якщо х = 2 4/19 то 3/7×42/19+2/3×42/19-4/12×42/19= 18/19+28/19- 14/19= 42/19-14/19= 32/19