б) 4x - 4y + 7x - 7y = 11x - 11y
г) 2a - 3b + 3a = 2a - 3b + 3a = 5a - 3b
е) ax - ay - bx - by = ax - bx - ay - by = xa−ba - ba−b - ya+ba + ba+b
2aba+2ba + 2ba+2b - 3aba−4a - 4a−4 = 2ab^2 + 4ab^2 - 3a^2b + 12ab = 6ab^2 - 3a^2b + 12ab
б) 4x - 4y + 7x - 7y = 11x - 11y
г) 2a - 3b + 3a = 2a - 3b + 3a = 5a - 3b
е) ax - ay - bx - by = ax - bx - ay - by = xa−ba - ba−b - ya+ba + ba+b
2aba+2ba + 2ba+2b - 3aba−4a - 4a−4 = 2ab^2 + 4ab^2 - 3a^2b + 12ab = 6ab^2 - 3a^2b + 12ab