Question

METODO DE SUSTITUCION D) (7*-3Y= LA OTRA QUE ABAJO 6*-2Y=2 GRACIAS LA NECESITO

Answer 1

7X - 3Y = 1 (Ecuacion 1)

6X - 2Y = 2 (Ecuacion 2)

En (2)

6X = 2Y + 2

X = 2Y/6 + 2/6

X = Y/3 + 1/3

Reemplazo en (1)

7X - 3Y = 1

7(Y/3 + 1/3) - 3Y = 1

7Y/3 + 7/3 - 3Y = 1

7/3 - 1 = 3Y - 7Y/3

7/3 - 3/3 = 9Y/3 - 7Y/3

4/3 = 2Y/3

6Y = 12

Y = 12/6

Y = 2

Reemplazo el valor de Y en X = Y/3 + 1/3

X = (2)/3 + 1/3

X = 2/3 + 1/3

X = 1

Rta: X = 1; Y = 2

X = 1/4