Question

me ajudem aresolver x-2y=3 2x+y=11

Answer 1

x - 2y = 3 (-2)
-2x + 4y = -6

-2x + 4y = -6
 2x + y = 11
5y = 5
y = 5/5
y = 1

x - 2y = 3
x - 2.1 = 3
x - 2 = 3
x = 3 + 2
x = 5