НОМЕР 179 посчитайте

(x;y)=(3;10)

AB=(xA-xB;yA-yB)=((3-x);(-7-(-5)))

CD=(xC-xD;yC-yD)=((5-5);(8-y))

AB=CD <=> (3-x)=(5-5); (-7- -5)=(8-y)

x=3

-2=8-y

y=10