Question

what dose 3x-5y=15 and 2x-y=-4 really equel

Answer 1

The correct answer would be (-5,-6). Hope that helps!

Answer 2

3x - 5y = 15 -----> 1 
2x - y = -4 ------>2 
multiply eqn2 by -5 and add eqn 1 
3x-5y = 15 
-10x +5y = 20 
--------------------
-7x = 35 
x = -5 
sub in eqn 2 
2(-5) - y = -4 
-10 - y = -4 
-y = -4+10 
-y = 6 
y = -6 
so the answer is (-5, -6)