courtneynicholas
courtneynicholas courtneynicholas
  • 14-11-2016
  • Mathematics
contestada

-4x + y =6
-5x - y = 21

explain????

Respuesta :

charstar
charstar charstar
  • 14-11-2016
-4x+y=6
-5x-y=21

You have to add the 2 equations so you get:

-9x=27
Divide both sides by -9 (so that you have x on the left side):

x=-3

Hope this helps :)
Answer Link
Holy89ghost
Holy89ghost Holy89ghost
  • 14-11-2016
well, Did you use a calculator If so then the answer is correct!!!! And -4x + y= 4 times X + Y. You figure out the rest.
Answer Link

Otras preguntas

(10y^3+20y^2+55y)/5y
how is mass transit in cities a possible solution tk urban air pollution?
Data are drawn from a symmetric and bell shaped distribution with a mean of 120 and a standard deviation of 5. There are 900 observations in the data set. What
Find Domain of the functionsquare root of (x-8)/x(x-9)
(10y^3+20y^2+55y)/5y
how is mass transit in cities a possible solution tk urban air pollution?
How is it possible for Mercury to have frozen ice ?
Data are drawn from a symmetric and bell shaped distribution with a mean of 120 and a standard deviation of 5. There are 900 observations in the data set. What
How is it possible for Mercury to have frozen ice ?
How is it possible for Mercury to have frozen ice ?