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2) 3x+2y=5
IGUALACIÓN
despejo 1) despejo 2)
3) x=(5-3y)/2 4) x=(5-2y)/3
IGUALO
y=y
(5-3y)/2=(5-2y)/3 en 3)
3(5-3y)=2(5-2y) x=(5-3y)/2
15-9y=10-4y x=5-(3(1)/2)
-9y+4y=10-15 x=(5-3)/2
-5y=-5 x= 1
y=1
Comp. en 2)
3x+2y=1
3(1)+2(1)=5
3+2=5
5=5