edward9michael
edward9michael edward9michael
  • 14-02-2018
  • Mathematics
contestada

What is the solution of the system?

4x-y=-38
x+y=3

(_,_)

Respuesta :

Kaikerscupcake
Kaikerscupcake Kaikerscupcake
  • 14-02-2018
4x-y=-38
x+y=3

Add the system together.

4x+x= 5x

-y+y= 0 (the y's cancel out, that's why we can do this)

-38+3= -35

5x=-35

Divide both sides by 5. 

x=-7

Now, plug that in. 

-7+y=3

Add -7 on both sides, 

y=10

The solution is: (-7, 10)

I hope this helps!
~kaikers
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