а+(45-30)=75 как правильно решить

вывод к выражению Константина Георгиевича Паустовского:" Нет таких звуков, красок, образов и мыслей, для которых не нашлось бы в нашем языке точного выражения."

написати казку про математику

41. Hello! How are you? A) I’m an engineer. B) Pleased to meet you. C) Fine, thanks. And you? 42. Would you like some crisps? A) No, please. B) No, thanks. C) No, okay. 43. What does she do? She … . A) does secretary B) is a secretary C) is cooking 44. We are late for the football match. A) Hurry up! B) Yes, I’m playing football. C) What date is it? 45. Excuse me, what’s the time, please? A) I’m late. B) I don’t have time. C) Sorry, I don’t have a watch. 46. Good morning, madam! Can I help you? A) Yes, please! B) Yes, I like it! C) No, I don’t. 47. Let’s stay at home and watch TV tonight. A) OK! What’s on? B) Let’s go! C) Do it! 48. I didn’t pass my English exam. A) Do you? B) Well, I do. C) I’m sorry! 49. Good-bye! A) Fine, thank you! B) Bye! C) Hello! 50. What is the weather like today? A) Yes, I like it. B) Yes, it is. C) It is fine