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Volrs148
@Volrs148
October 2019
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Qual a solução do sistema 2x+2y=9,4x-5y=7
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2x+2y=9
4x-5y=7
> 2x=9-2y
>2(9-2y)-2y=7
>18-4y-2y=7
>-6y=-9.(-1)
6y=9
9/6
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Lista de comentários
4x-5y=7
> 2x=9-2y
>2(9-2y)-2y=7
>18-4y-2y=7
>-6y=-9.(-1)
6y=9
9/6