Posted by Tony on Sunday, December 17, 2006 at 8:35pm.
I NEED TO SOLVE FOR Y AND X
im getting rele confused on this. ok here is the prob.
Multiply equation 1 by -1.
Add equation 1 to equation 2. The x term cancels. Solve for y.
THEN, put the value of y into either equation and solve for x.
Finally, put the value of x and y into the OTHER equation and see if those values satisfy the equation.
- MATH - Anon, Thursday, July 17, 2014 at 12:19pm
Multiplying Equation 1 by -1 you get:
Adding that to equation 2 you get:
-x -y = -5
+ x -2y = -4
-3y = -9
Divide both sides by -3 and you get
Put that back into either equation and you can solve for x
So x=2, y=3 should be the solutions.
Check this in the other equation, x-2y=-4
2-2(3) = -4
2-6 = -4 why yes it does! :-)
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