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Rezolvati in R-R sistemul de ecuatii prin metoda substitutiei{2x-21x=2 x-8y=-4

Răspuns :

Samsunggenius200
2x−21x=2
(2x+−21x)=2
−19x=2
[tex] \frac{-19x}{-19} = \frac{2}{-19} [/tex]
[tex]x= \frac{2}{19} [/tex]

x−8y=−4
x−8y+8y=−4+8y
x=8y−4

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