7/9x-5/18x+1/4x=1/6 помогите решить , спасибо))))

1) Если х в знаменателе:7/(9х) - 5(18х) + 1/(4х) = 1/64•7/(4•9х) - 2•5/(2•18х) + 9•1/(9•4х) = 1/628/(36х) - 10/(36х) + 9/(36х) = 1/627/(36х) = 1/63/(4х) = 1/64х = 6•3х = 18/4х = 9/2 = 4 1/2 =4,52) Если х в числителе:(7/9)х - (5/18)х + (1/4)х = 1/628х/36 - 10х/36 + 9х/36 = 1/627х/36 = 1/63х/4 = 1/6х = 4/(3•6)х = 2/9