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Nicole2000
a fost răspuns

Determinati nr nat x si y ,stiind ca xy7(cu bara de asupra)+3· 4xy(cu bara de asupra)=2143

Răspuns :

Flavistin
xy7+3x4xy=2143
x=7
y=2
Cpw
[tex]\overline {xy7}+3*\overline {4xy}=2143[/tex]
[tex]10*\overline {xy}+7+3(400+\overline{xy})=2143 [/tex]
[tex]10*\overline {xy}+7+1200+3*\overline{xy}=2143 [/tex]
[tex]13*\overline {xy}=936[/tex]
[tex]\overline {xy}=72[/tex]

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