idolvuong200017 idolvuong200017
  • 16-07-2021
  • Mathematics
contestada

Giải hệ pt :{ 2x-3y=1
{x+2y=4

Respuesta :

ghaithgh
ghaithgh ghaithgh
  • 16-07-2021

x+2y=4 ] × (-2) —> -2x-4y=-8

2x-3y=1

-2x-4y=-8

_________o_o___

–7y=–7 —> y =1

2x-3y=1 —> 2x -3(1)=1 —> 2x-3=1 —> 2x=1+3 —> 2x=4

x=4/2 —> x=2

(x,y) —> ( 2,1)

I hope I helped you ^_^

Answer Link

Otras preguntas

Who did the samurai serve?
On what does the apparent motion of objects in the sky depend?
why was the neolithic era characterized
Which word from the text includes a suffix meaning "lacking" or "without"? unburied merciless abandoned entanglements
How much larger is a gallon than a quart?
2√11 times h^5√3h^12
If a student fails to recognize how to properly quote the words of an author, that student may be found guilty of
which country was the first to establish social security laws
The early American Indian civilizations of Mexico and Peru were based on which agricultural product? (A) Wheat
the sum of two numbers is 3 3/4 if 1/3 of the larger number is 1/2 more than 2/3 of the smaller find the number