gali74 gali74
  • 20-08-2019
  • Mathematics
contestada

solve the system
x+3y=1 ; -5x+4y=-5

Respuesta :

Gasaqui
Gasaqui Gasaqui
  • 23-08-2019

Answer:

x=1

y=0

Step-by-step explanation:

x+3y = 1        equation 1

-5x+4y = -5   equation 2

using equation 1 we have:

x+3y = 1  

x= 1-3y   equation 3

using equation 3 in equation 2 we have:

-5(1-3y) +4y = -5

-5 + 15y +4y = -5

19y -5 = -5

19y = -5 +5

19y = 0

y=0

so we have:

x= 1-3y

x= 1- 3(0)

x=1

Answer Link

Otras preguntas

What are causes for stress?
what's a sentence using Anti-Federalists
What happened on may 24 2002 in history
why is britain an MEDC (more economically developed country)?
what were the two most important results of the european voyages to the americas?
TRUE OR FALSE Is it the responsibility of the general assembly to prepare a budget for the state?
9x-2y=-21 2x+3y=16 Substitution
10x + 7y=1 -5x-7y=24
Which class of hydrocarbons contains at least one carbon-carbon triple bond
What's 65 divided by 3