Sunday

April 19, 2015

April 19, 2015

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

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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