Question

a){x+y=11 {x-y=1

b){x+y=11{x-y=5​

Answer 1

Resposta:

Explicação passo a passo:

A)

x+y=11

x-y=1 (+)

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2x = 12

x = 12/2

x = 6

X + y = 11

6 + y = 11

y = 11-6

Y = 5

R.: x = 6; y = 5

____________________

b)

x+y=11

x-y=5​ (+)

--------------

2x = 16

x = 16/2

x = 8

x + y = 11

8 + y = 11

Y = 11 - 8

Y = 3

R.:

X = 8

Y = 3