1.

1) (4xy)/12xy=1/3

2)3xy/15xy=0.2=1/5

3)3xy(x-y)/6xy^2(x-y)=1/2y=0.5y

4)3x(x-3)/9x^2(x+2)=x-3/3x(x+2)

2.

1)8/x^3

2)9a^2/x^4

1.

а) * =

б) * =

в) * =

г) * = =

2.

а)( = =

б) ( = =