Question

номер 502 (1-2)
помогите пожалуйста

Answer 1

1) (a-4)^2/(x(a-4)=(a-4)/x=
=(-5-4)/-2= -9/-2=4.5
2) (x(3x-y)/(3x-y)^2=
=x/(3x-y)=3/4 :(9/4+2/3)=
=3/4: (27+8)/12=3/4 :
: 35/12= 3/4 * 12/35=
9/35= 3,9=~ 4