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

depict an angle 7pi over 4 in standard position
(64/9)^(-2/3) Simplify the expression
What equals to 31 using multiplication?
Express 0.59 as a fraction....
Express 0.59 as a fraction....
john and mary went to the mall. Is that a sentence or a fragment?
What equals to 31 using multiplication?
How many syllable in electricity
(64/9)^(-2/3) Simplify the expression
depict an angle 7pi over 4 in standard position