Question 550755
10x + 7y = -120.5
-20x – 14y = 241

-----------------
Multiply thru the top equation by 2:
20x + 14y = -241

----
Add that to the bottom equation to get:
0 = 0
------
That means the two equations are really one equation.
There are an infinite number of solutions: (x ,(-10/7)x -(120.5/7))
+++++++++++++++++++++++=
Cheers,
Stan H.
=================================