Question

1/5-x+4/5-y = 2600
x + y = 12000

Answer 1

Respuesta:

Xd,

Explicación paso a paso:

1/5-x+4/5-y = 2600...(1)

x + y = 12000...(2)

De (1), utilizando carita feliz:

1/5-x+4/5-y = 2600

((5-y)+4(5-x))/(5-x)(5-y)=2600

((5-y)+4(5-x))=2600(5-x)(5-y)

5-y+20-4x=2600(5-x)(5-y)

25-(y+4x)=2600(5-x)(5-y)....(3)

De (2):

x + y = 12000

y=12000-x...(4)

Reemolazando (4) en (3):

25-(12000-x+4x)=2600(5-x)(5-y)

25-(12000+3x)=2600(5-x)(5-y)

Resolviendo nos queda:

x=1400

y=-200