Respuesta :

ghanami

Answer:

Step-by-step explanation:

hello :

6x+5y=-20.....(*)

-6x-10y=25.....(**)

add(*) and(**) :  -5y=5    so y= -1

multiply (*) by 2   : 12x+10y=-40 ...(***)

now add(**) and (***) : 6x=-15   so x = -15/6 = -5/2