Respuesta :

ghanami

Answer:

Step-by-step explanation:

hello :

5x-y=7....(*)

4x+8y=-12​...(**)

multiply (*) by 8 : 40x-8y =56  ...(***)

add(**) and (***) : 44x = 44  so : x = 1

put this value in (*) : 5(1)-y = 7

y = 5-7 = -2