1)

x – 5y = 8,
2x + 4y = 30;

3)

5a – 3b = 14,
2a + b = 10;

2)

2x – y = 1,
7x – 6y = –4;

4)

2x – 3y = 2,
4x – 5y = 1.

gggggerrrr    2   14.05.2020 12:06    0