carinecarneiro3 carinecarneiro3

27-04-2017
Mathematics

contestada

5x+2y=9
3x-7y=-11
Qual o valor do X e do Y?

Respuesta :

desireeno desireeno

27-04-2017

5x+2y=9
3x-7y=-11
5(1)+2(2)=9
5+4=9
3(1)-7(2)=-11
3-(14)=-11

x= 1
y= 2

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