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VicthorP
@VicthorP
November 2019
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Resolva esses 2 sistemas.
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Anôniminimo
A)
Equação I) y-x=2
y=2+x
Equação II) x+y=0
Aplicando I em II:
x+(2+x)=0
2+2x=0
x=-1
y=2+x
y=2-1 y=1
B) Equação I: 2x+3y=30
Equação II:2x-y=6
Subtraindo II de I:
3y+y=30-6
4y=24
y=6
2x-6=6
x=6
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Equação I) y-x=2
y=2+x
Equação II) x+y=0
Aplicando I em II:
x+(2+x)=0
2+2x=0
x=-1
y=2+x
y=2-1 y=1
B) Equação I: 2x+3y=30
Equação II:2x-y=6
Subtraindo II de I:
3y+y=30-6
4y=24
y=6
2x-6=6
x=6