Friday
November 28, 2014

Homework Help: System of equations

Posted by Gracie on Monday, August 21, 2006 at 8:08pm.

3x =2y = 17
2x-y =9


and

3x+y = 3
x+2y = -4


How do I do these??


22Z 6Y


These are simultaneous equations. You have a typo in #1.
For the second set, just multiply equation 1 by 2, then subtract equation 2 from equation 1 (which will eliminate y), then solve for x. Post your work if you get stuck and need further assistance.


These are simultaneous equations. You have a typo in #1.
For the second set, just multiply equation 1 by 2, then subtract equation 2 from equation 1 (which will eliminate y), then solve for x. Post your work if you get stuck and need further assistance.

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