Question

-x+y=2 x+y=4 hitung pnyelesaianya

Answer 1

-x + y = 2
x + y = 4
-------------- -
-2x = -2
2x = 2
x = 1

x + y = 4
1 + y = 4
y = 3

HP = {1, 3}

Answer 2

- x + y = 2
x + y = 4
________ +
2y = 6
y = 3
x = 1