Question

Ayudenme a Encontrar el Valor de X y el Valor de Y​

Answer 1

Respuesta:

a) x = 4 , y =3

b) x=4 , y=3

Explicación paso a paso:

3x+8y=36

x-y=1 /* 8

3x+8y=36

8x-8y=8

11x=44

x=44/11

x=4

3(4)+8y =36

12+8y=36

8y=36-12

8y=24

y=24/8

y=3

---------------o--------

2x+y=21

x-3y=0 /*-2

2x+y=21

-2x+6y=0

7y=21

y=21/7

y=3

3x+8(3)=36

3x+24=36

3x=36-24

3x=12

x=12/3

x=4