Question 467682
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Hi,
Solving using the Substitution Method
2x+y=6 OR y = -2x+6
5x+4y=0 
5x + 4(-2x+6) = 0
       -3x = -24
         x = 8 and y = -10
Ordered pair (8,-10) is the solution for this system of EQs

CHECKING our Answer***Using Elimination Method
2x+y=6 
5x+4y=0 

-8x-4y=-24   |Multiplying 1st EQ thru by -4, so as to eliminate y
5x +4y = 0
 -3x = -24
   x = 8  and y = -10 (y = -2x+6)