zapora12
zapora12
13-09-2015
Mathematics
contestada
4(5n-7)=10n+2
9(x+3)=4x-3
Respuesta :
TSO
TSO
13-09-2015
[tex]4(5n-7) = 10n+2\\20n-28=10n+2\\20n=10n+30\\10n=30\\n=3\\\\\\9(x+3)=4x-3\\9x+27=4x-3\\9x=4x-30\\5x=-30\\x=-6[/tex]
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