Question

a){x+y=25 e { x-y=1


b){x+y=6 {x-y=14

​

Answer 1

Resposta:

A) ( x y) ( 13,12)

B) (x, y) ( 10,-4)

Explicação passo-a-passo:

A) x + y = 25

X - y = 1

_________

2x = 26

X = 26/2

X = 13

Y = 25 - x

Y = 25 - 13

Y= 12

B) x+y = 6

X-y = 14

_________

2x = 20

X = 20/2

X = 10

Y = 6 - 10

Y = - 4