¿ayuda es urgente!una cancion para pedir perdon 10 PUNTOS Y 5 ESTRELLAS?

Hola Por lo menos, deberías saber que hay varios procedimientos para resover estre sistema de 2 ecuaciones con 2 incógnitas. Haremos por reducción, se multiplican las ecuaciones para que cuando se sumen se elimine una de las variables 1) 3 x - 2 y = 40 2) 2 x + 5 y = -5 Averiguamos x 1) * 5 ; 2) * 2 1') 15 x - 10 y = 200 2') 4 x + 10 y = -10 sumamos 19 x = 190 x = 190/10 x = 10 ********* Averiguamos y 1) * 2 ; 2) * (-3) 1') 6 x - 4 y = 80 2') -6 x - 15 y = 15 sumamos -19 y = 95 y = 95/-19 y = -5 ********** Verificamos 3 x - 2 y = 3 (10) - 2 (-5) = 30 + 10 = 40 2 x + 5 y = 2 (10) + 5 (-5) = 20 - 25 = -5 Saludos.

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