А)5a(3a-2b)/b(3a-2b)=5a/b=5*(-2)/(-0,1)=10/0,1=100
б)(3c-2d)(3c+2d)/6cd(3c-2d)=(3c+2d)/6cd=(3*2/3+2*1/2)/(6*2/3*1/2)=
=(2+1)/2=1,5
в)6x(x+2y)/5y(x+2y)=6x/5y=(6*2/3)/(-5*0,4)=4/(-2)=-2
г)(x+3y)²/4x(x+3y)=(x+3y)/4x=(-0,2-3*0,6)/(-4*0,2)=(-0,2-1,8)/(-0,8)=
=(-2)/(-0,8)=2,5