Question

2x+3y=54
- 2X-4X = 27​

Answer 1

Respuesta:

x=4,5

y=15

Explicación paso a paso:

A.-2x-4x= 27

-6x=27

x=27/-6

x= -4,5

x= (-1)(-4,5)

x=4,5

Comprobamos

-2(4,5)-4(4,5)=27

-9-18=27

-27 = 27

(-1)(-27) =27

27=27

B.2x+3y=54

2(4,5)+3y=54

9+3y=54

3y=54-9

3y=45

y=45/3

y=15

Comprobamos

2(4,5)+3(15)=54

9+45=54

54=54