Question

método de la igualación 12x - 14y = 20
(12y - 14x = 19​

Answer 1

Respuesta:

12x - 14y = 20

12y - 14x = 19

12x - 14y = -20

​-14x + 12y = 19

 144x - 168y = -240

-196x + 168y =  266

-52x = 26

x = 26/-52

x = - 1/2

reemplazas en "x"

144x - 168y = -240

144(-1/2) - 168y = -240

-144/2 - 168y = -240

-72 - 168y = -240

-168y = -240 + 72

-168y = -168

y = -168/-168

y = 1

comprobación

144x - 168y = -240

144(-1/2) - 168(1) = -240

-144/2 - 168 = -240

-72 - 168 = -240

-240 = -240

-196x + 168y =  266

-196(-1/2) + 168(1) = 266

196/2 + 168 = 266

98 + 168 = 266

266 = 266

Explicación paso a paso: