Question

Решите систему уравнений
Номер 6

Answer 1

Ответ:

(1,4 ;  0,4)

Объяснение:

$\left \{ {{x-y = 1} \atop {\frac{x}{2} + \frac{y}{4} =  \frac{2x-y}{3}}} \right.<=> \left \{ {{x-y = 1} \atop {\frac{x}{2} + \frac{y}{4} =  \frac{2x-y}{3} | *12}} \right.<=>\left \{ {{x - y = 1 } \atop {6x + 3y = 8x - 4y}} \right.  <=>x = 1 +y 6(1+y) + 3y = 8(1+y) - 4y6 + 6y + 3y = 8 + 8y - 4y9y - 4y = 8 - 6 </h2><h2>5y = 2 = 2/5 = 0,4 </h2><h2>x = 1 + 0,4 = 1,4$