jereline
jereline
07-02-2016
Mathematics
contestada
2x + y = 3 3x - 2y = 4
Respuesta :
JvitorBR
JvitorBR
07-02-2016
Hi
2x+y = 3 ⇒ ×2 ⇒ 4x+2y = 6
3x-2y = 4
4x+2y = 6
3x-2y = 4
----------------
4x+3x+2y-2y = 6+4
7x+0 = 10
7x = 10
x = 10/7
2x+y = 3
2(10/7)+y = 3
20/7+y = 3
y = 3-20/7
y = (21-20)/7
y = 1/7
Answer Link
VER TODAS LAS RESPUESTAS ( 59+ )
Otras preguntas
A way the Supreme Court contributes to the balance of power in US government is by?
How did the convory system help the Allies at sea
In triangle DEF, side DE is 3 inches, side EF is 4 inches, and sides DF is 5 inches. The largest angle is opposite which side.?
Write an equivalent ratio. 44 to 38
people once believed organisms could grow from food or dirt.How might the scientific study of cells have affected this view?
Where did Roman spectators watch chariot races? A. the Colosseum B. the Pantheon C. the Forum D. the Circus Maximus
Which type of poem tells a story?
According to the 1790 census, where did enslaved people live within the United States?
what is the historical significance of the year 1898?
Which did the Greeks honor in their art? A. humanity B. flowers C. nature D. animals
