haileyraehewes haileyraehewes
  • 24-01-2020
  • Mathematics
contestada

How do I do this
X+y=-4
3x-6y=15

Respuesta :

Yang100
Yang100 Yang100
  • 24-01-2020

Answer:

x=-1, y=-3. (-1, -3).

Step-by-step explanation:

x+y=-4

3x-6y=15

---------------

x=-4-y

3(-4-y)-6y=15

-12-3y-6y=15

-12-9y=15

9y=-12-15

9y=-27

y=-27/9

y=-3

x+(-3)=-4

x-3=-4

x=-4+3

x=-1

Answer Link

Otras preguntas

What Was The Role Of The Roman Catholic Church During The Middle Ages?
x-(9x-10)+11=12x+3(-2x+1/3)
6a=78 how to solve it
The founder of Christianity was _____. A. Abraham B. Jesus C. Muhammad D. Moses
The founder of Christianity was _____. A. Abraham B. Jesus C. Muhammad D. Moses
megan buys 3 bracelets and 3 necklaces. Each bracelet cost $5. Megan pays the clerk $40 and gets $4 change. What is the cost,in dollars,of one necklace.
How many radians are in 300 degrees?
what is it that lennie wants george to retell all time
It is asking for me to factor this equation (x-2)(x-2)+6(x-2)+9 this is the final answer (x-1)(x-1) how did this answer come to be?
What are 4 reasons the United states was unprepared for war with Britain.