I've tried the 2 methods I know (Substitution and addition) and can't get an answer to this. Some of the answers I've gotten were 7(2/5) and 22 for x. It's just been so long since I've had to one of these!

(1/4)x - y = 7

x + 4y = 0

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- Apr 15th 2009, 03:20 PMtyler.A (simple) System of Linear Equations
I've tried the 2 methods I know (Substitution and addition) and can't get an answer to this. Some of the answers I've gotten were 7(2/5) and 22 for x. It's just been so long since I've had to one of these!

(1/4)x - y = 7

x + 4y = 0 - Apr 15th 2009, 03:26 PMicemanfan
- Apr 15th 2009, 03:31 PMtyler.
Thanks for the help! I'm not sure where I went wrong with my addition... I think I may have forgotten to cancel out the 1/4 after multiplying by 4. (Although, wouldn't y = -3 1/2 at the end?)

Thanks! - Apr 15th 2009, 11:07 PMTwig
$\displaystyle -3.5 = -\frac{7}{2} $ (Cool)