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Asmiralda
11-13-2005, 13:22
Zdraveite
eto mi go i moia problem. Ot 1 chas se mucha da ia resha tazi sistema:
10x+4y=24
3x+6y=24

Mnogo shte sum blagodarna ako niakoi podrobno mi reshi trazi zadacha
Merrsi predvaritelno

11-13-2005, 13:37
emi zna4i
ymnojava6 10x+4y=24 po 6 i poly4ava6 60x+24y=144
posle ymnojava6 3x+6y=24 po (-4) i polyva4ava6
-12x-24y=-96 i kato gi subere6 2te poly4ava6 48x=48 zastoto +24y kato go sunere6 s -24y poly4va6a 0

11-13-2005, 13:40
ami izrazqvash x v parvoto uravnenie i se polu4ava ne6to ot sorta na x=24-4y varxu 10i ot tam zamestvash:))

11-13-2005, 13:42
am ne 4e ne6to am taka e po-trydno ....

11-13-2005, 13:53
zna4i polu4ava se 13x+10y=48 ot tam 10y=48-13x y=48-13x varxy 10,sled tova zamestvash i ot tam se polu4ava10x+4{48-13x varxhu10}=24 vsi4ko drygo ve4e e v tvoi race ne mi se stmqta tolkoz

11-13-2005, 15:11
ZA koi klas e tazi zada4a?

11-13-2005, 15:27
x=1 y = 7 vyrhu 2