Răspuns:
2x=-3y<=>x=-3y/2 -3y=2x<=>y=-2x/3
Explicație pas cu pas:
a)4x+6y=4×(-3y/2)+6×(-2x/3)=-6y-4x
b)x/y=-3y/2/(-3/2x)=9y/4x
c)2x+y)/x=(-3y-2x/3)/-3y/2=(-9y-2x)/3×(-2/3y)=(18y+4x)/9y
d)[2(-2x/3)-3(-3y/2)]/(-3y/2+(-2x/3)=(-4x/3+9y/2)/(-9y+4x)/6=(-8x+27y)/6×6/(-9y+4x)=(-8x+27y)/(4x-9y).
