Question

СРОЧНО
B)
(7x – 2y = 15,
2x + y = 9;
г)
x + 3y = 2,
2x + 3y = 7.​

Answer 1

B)

7x – 2y = 15,

2x + y = 9;

7x – 2y = 15,

4x + 2y = 18;

11x = 33,

2x + y = 9;

x = 3

y = 3

г)

x + 3y = 2,

2x + 3y = 7

x + 3y = 2,

x = 5

y = -1

x = 5