Question

metodo de sustitucion 2x+3y=19 2x-2y=4

Answer 1

2x+3y=19

2x=19-3y

2x-2y=4

19-3y-2y=4

-5y=-15

15=5y

3=y

Luego:

2x+3y=19

2x+3(3)=19

2x+9=19

2x=10

x=5