Question

{x+y/2 - 3 = -2
x/3 - y = 2 sistemas

Answer 1

Resposta:

x = 12/7 e y = -10/7

Explicação passo-a-passo:

x+(y/2)-3 = -2

x+(y/2) = -2+3

x+(y/2) = 1

y/2 = 1-x

y = 2-2x

(x/3)-(2-2x) = 2

(x/3)-2+2x = 2

x/3+2x = 2+2

x/3+2x = 4

(x/3)+(6x/3) = 4

7x/3 = 4

7x = 3*4

7x = 12

x = 12/7

y = 2-(2*12/7)

y = 2-(24/7)

y = 14/7 - 24/7

y = -10/7