Question

раскройте скобки (7с+9+8d)*5+4*(5c-2-d)

Answer 1

(35c+45+40d)+(20c-8-4d)=35c+45+40d+20c-8-4d=55c+37+36d

Answer 2

35с+45+40d+20c-8-4d=55c+36d+37