Розв'язати систему рівняннь〈 2х + у = 12〈 х - у = 3

ответ:

interviewer: excuse me, may i ask you a few questions?

headmaster: all right. go ahead.

interviewer: can you speak english?

headmaster: i'm afraid my english is not very good, but i'd like all the pupils of the school speak good english.

interviewer: what were your favourite subjects and what subjects did you not like at school?

headmaster: do you expect me name all the subjects?

interviewer: oh, no. we would like you mention only a few.

headmaster: i liked french, literature and economics. i didn't like maths and physics.

interviewer: what did you want be when you were a boy, and what did your parents want you become?

headmaster: i wanted become a teacher. and so did my parents as both of them were teachers.

объяснение:

напишите!

и да, полагаю, что нужно просто раскрыть скобки.