Реши систему уравнений способом
алгебраического сложения.
2x+y=1
2х – у = 8​

Do you know that?Express your opinion.A lot of works of art are bought by private collectors.This is a real disaster for museums and picture gallaries which cannot pay as much money as the private collectors.This may be the reason why decide to exhibit them. The famous English painter Gainsborough was fond of music and filled his horse with all kinds of musical instruments,which he could play rather well.He even wished sometimes he were a professional musician