#6

Y-x-z

Ab-1-ab+1-ab+2 =Ab4

#7

X-y-x+xy-xy-y

#8

U = S * t

5*3 = 15 km

Ответ:

Номер 6

Y-x-z=Ab-1-ab+1-ab+2 =Ab4

Номер 7

X-y-x+xy-xy-y

Номер 8

U = S * t

5*3 = 15 km