April2941 April2941
  • 25-08-2017
  • Mathematics
contestada

Solve the system by the elimination method
6x+2y=-16
-x-3y=-16

Respuesta :

apologiabiology
apologiabiology apologiabiology
  • 25-08-2017
eliminate y's
multiply first equation by 3 and 2nd by 2 and addd them

18x+6y=-48
-2x-6y=-32 +
16x+0y=-80

16x=-80
divide both sides by 16
x=-5
sub back

-x-3y=-16
-(-5)-3y=-16
5-3y=-16
-3y=-21
y=7

(x,y)
(-5,7)
Answer Link

Otras preguntas

Which skill-related fitness abilities are necessary for volleyball?
List the 'Western Isle' countries.
Which countries had a particular geopolitical advantageous position that becomes important during the collapse of communism? and why?
what kind of government did rome have fifth, from 324-476 A.D (Constantine to the fall of Rome)
Which two land claims did president James K. Polk quickly pursue to stop what he believe was British interference
Does anyone know who Grace Vanderwall is?
What is 255.89 rounded to 1 significant figure?can anybody help me with the rest?
What is the answer to this equation 1/2(10x-20)=5x-10
why does sodium chloride have a high melting point?
What happens if a payee can never get an account holder to pay a returned check? a. there is nothing the payee can do to get payment. b. the bank will eventua