SOLUTION: hi please help me solve this problem ( solve the linear system using substitution) 3y+x=2, y-x=-6

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Question 404599: hi please help me solve this problem ( solve the linear system using substitution) 3y+x=2, y-x=-6
Found 2 solutions by stanbon, ewatrrr:
Answer by stanbon(75887)   (Show Source): You can put this solution on YOUR website!
3y+x=2
y-x=-6
---
Solve the 2nd for "y":
y = x-6
---
Substitute into the 1st and solve for "x":
3(x-6)+x = 2
3x-18 + x = 2
4x = 20
x = 5
----
Solve for "y":
y = x-6
y = 5-6
y = -1
=============
Cheers,
Stan H.
Answer by ewatrrr(24785)   (Show Source): You can put this solution on YOUR website!


Hi

solving the linear system using substitution

y-x= -6  | x = (y+6)

3y+x=2 

3y + (y+6) = 2  |substituting for x

solving for y

  4y = -4

   y = -1   x = 5   (y+6)



CHECKING our Answer***

y-x= -6

-1-5 = -6 

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