Question

-5x+2y=15 metodo da adiçao.... 5x+2y=1

Answer 1

{-5x+2y=15 * (-1)
{ 5x+2y=1

{5x-2y= -15
{5x+2y= 1
-------------
10x= -14

x= - 14/10

x= -7/5


5x+2y= 1

5*(-7/5)+2y=1

-35/5 +2y=1

-7+2y=1
2y= 1 +7

y=4