SOLUTION: I AM SUPPOSE TO FIND THE SOLUTION TO THIS PROBLEM: -3X + Y= -18; 3X-Y= -16 THIS IS WHAT I GOT : THERE IS NO SOLUTION (4.44,5.22)

Algebra ->  Algebra  -> College  -> Linear Algebra -> SOLUTION: I AM SUPPOSE TO FIND THE SOLUTION TO THIS PROBLEM: -3X + Y= -18; 3X-Y= -16 THIS IS WHAT I GOT : THERE IS NO SOLUTION (4.44,5.22)      Log On


   

Question 29957: I AM SUPPOSE TO FIND THE SOLUTION TO THIS PROBLEM:
-3X + Y= -18; 3X-Y= -16
THIS IS WHAT I GOT :
THERE IS NO SOLUTION (4.44,5.22)
Answer by sdmmadam@yahoo.com(530) About Me  (Show Source):
You can put this solution on YOUR website!
The given problem is wrong because if you add both the equations not only do both the variables vanish but you get an afsurdity: 0 = -34 WHICH IS NOT MATH!
Let me give you one corrected version of the problem
3x + y= 18 ----(1)
3x - y= 6 ----(2)
(1) + (2) implies
(3x+3x) = (18+6)
6x = 24
x = 24/6 = 4
x=4in (1) gives
3X(4)+y = 18
12+y =18
y = 18-12 = 6
Answer: x =4 and y=6
Verification:Putting x =4 and y=6 in (2)
LHS = 3x-y = 12-6 =6 =RHS
Therefore our values are correct.