Решите 670!!!!!!!!!!!!!

Question

Решите 670!!!!!!!!!!!!!

---

Answer 1

=(х+у)*(2а+b)    2)=(a-b)*(y-1)   3)=(c+3)*(1-x)

Answer 2

2a(x+y)+b(x+y)=(x+y)*(2a+b)________-__________________________y(a-b)-(a-b)=(a-b)*(y-1)______________(c+3)-x(c+3)=(c+3)*(1-x)

Comments

пробел_и_интер_барахлит))