jereline
jereline
07-02-2016
Mathematics
contestada
-5x + 3y = 6
x- y = 4
Respuesta :
JvitorBR
JvitorBR
07-02-2016
Hi
-5x+3y = 6
x-y = 4 ⇒ ×3 ⇒ 3x-3y = 12
-5x+3y = 6
3x-3y = 12
------------------
-5x+3x+3y-3y = 6+12
-2x+0 = 18
-2x = 18
x = 18/-2
x = -9
x-y = 4
-9-y = 4
-y = 4+9
-y = 13
y = -13
Answer Link
VER TODAS LAS RESPUESTAS ( 59+ )
Otras preguntas
write the following comparison as a ratio reduced to lowest terms. 85 minutes to 8 hours
why were the Christians persecuted in Rome?
multiply polynomials(2n+2)(6n+1)
A substance releases heat when it changes from a. liquid to solid b. solid to gas c. liquid to gas d. solid to liquid
write the following comparison as a ratio reduced to lowest terms. 85 minutes to 8 hours
what is 3 times sqrt 18
what was the most popular mode of transportation in 1920?
multiply polynomials(2n+2)(6n+1)
what is an approach paper
Which of the following makes up the dense outer layer of bone? a. compact bone b. spongy bone c. bone marrow d. periosteum
