Question

9x-5y=22
9x+5y=122​

Answer 1

esta correto! resultado da 122

Answer 2

{9x - 5y = 22

{9x + 5y = 122

18x = 144

x= 144/18

x= 8

9x + 5y = 122

9 • 8 + 5y = 122

72 + 5y = 122

5y = 122 - 72

5y =50

y= 50/5

y= 10

S= ( 8 , 10)