Question

The solution of the equations x – y = 2 and x + y = 4 is:
2 points​

Answer 1

Answer:

$x - y = 2 - - - - (1) \\ x + y = 4 - - - - (2) \\ add(1)and(2) \\ \: \: x - y = 2 \\ \: \: x + y = 4 \\ \: \: - - - - - \\ \: \: 2x + 0 = 6 \\ \: \: - - - - - \\ 2x = 6 \\ x = 3 \: \: \: ln(2) \\ x + y = 4 \\ 3 + y = 4 \\ y = 4 - 3 \\ y = 1$