Question

2x-3y=-8
5x-3y=7
Urge muchas gracias!

Answer 1

2x-3y=-8 (5)
5x-3y=7 (-2)
 
luego:
10x-15y=-40
-10x+6y=-14
___________
       -9y=-54
          y=-54/-9
          y=6

Answer 2

2x-3y=-8 (-5)
5x-3y=7 (2)
-------------
-10x+15y=40
10x-6y= 14
--------------------
9y= 54
y= 6

2x-3y=-8
2x-3 (6)=-8
2x- 18= -8
2x= -8+18
2x= 10
x= 5

CS {y=6; x=5}