millerluke millerluke
  • 02-10-2020
  • Mathematics
contestada

Solve the system by substitution.
3x +2y=-21
x+y=-9

Respuesta :

Ukmmmmm
Ukmmmmm Ukmmmmm
  • 02-10-2020

Answer:

Step-by-step explanation:

3x +2y=-21  and x+y=-9

3x +2y=-21  and x = -9-y

=> 3(-9 - y) + 2y = -21

-27 -3y + 2y = -21

-y = 6

y= -6

=> x = -9+6= -3

Answer Link

Otras preguntas

In which number does the digit 8 have a value that is 100 times greater than the digit in the number 349,257.83
I need help with 4 please
Need help with Math plz
I need to know the answer to this ASAP!!!
What are the two types of minerals?
Which organs are involved in your respiratory system
In “Cruel Tribute,” which character’s actions most advance the development of the plot?
what happens to the speed of molecules in water vapor when it condenses to a form of liquid​
In your own words what does controlled mean?
Advances in production, such as new technology, can do which of the following to a good?A. transform it from an expensive luxury to a mid-priced goodB. change i