Question

resolva o sestema
x+y=22
x-y=10​

Answer 1

Resposta:

{x+y = 22

{x-y = 10

________

x + x + y - y = 22 + 10

2x = 32

x = 32/2

x = 16

x + y = 22

16 + y = 22

y = 22 - 16

y = 6

S = {16; 6}