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2x-8y=16
2x=8y+16
x=
x=4y+8
2x-3y=6
2x=3y+6
ahora igualamos x con x
x=x
4y+8=
2(4y+8)=3y+6
8y+16=3y+6
8y-3y=6-16
5y=-10
y=-10/5
y=-2
sustituyimos el valor de y en cualquier ecuacion
2x-8(-2)=16
2x+16=16
2x=16-16
2x=0
x=0/2
x=0
Segundo caso
7x=5y+34
-7x=9x+10
igualamos
-7[5y-34]=7[9y+10]
-35y+238=63y+70
238+70=63y+35y
308=98y
y=308/98
y=22/7
encontrando x
7x=34+5()
7x=34+110/7
7x=348/7
x=
x=348/49