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Summertime

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May. 18th, 2003|06:57 pm

immortal
ohhh... tad substitūciju irtā ,kurai iebāž iexā to lieko "t"

x+y - xy = -23
x+y + xy = 49

tad kurš no tiem abiem īsti ir jāapzīmē ar t? es apzīmēju x+y tur man normāli viss sanāca tjip:

xy= 36

tālāk manšķiet ir tā:

x+y -36 = -24
x+y +36 = 49

un kā ,lai aprēķina to x un y ?man nesanāca ar ievietošanas moš kāds var paskaidrot?
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