4 примера лёгких
а)
(y=2x-1
(-2x+3y=9
Б)
(3х-7у=32
(х=-5у-4
в)
(4х+7у=40
(-4х+9у=24
г)
(2х-3у=-4
(5х+у=7
а)
(y=2x-1
(-2x+3y=9
Б)
(3х-7у=32
(х=-5у-4
в)
(4х+7у=40
(-4х+9у=24
г)
(2х-3у=-4
(5х+у=7
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Ответ:
a) x=3 y=5 б) х=23.5 у=5.5 в) х=3 у=4 г)х=1 у=2
Объяснение: