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D0i8lottHelpm D0i8lottHelpm
  • 18-01-2017
  • Mathematics
Answered

what is the solution of the system?

4x-y=-3

6x-y=-8

Verified Answer :

Greenleafable
Greenleafable Greenleafable
  • 25-01-2017

6x - y = -8
y = 6x + 8 - not plug this in the first equation

4x - y = -3
4x - (6x + 8) = -3
4x - 6x - 8 = -3
-2x = -3+8
-2x = 5
x = 5/(-2)
x = -5/2

Now we can solve for y.
As we said before, y = 6x + 8
y = 6* (-5/2) + 8
y = -15 + 8
y = -7

{x,y} = {-5/2,-7} is the solution to the system

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