👤
Stefangabor20
a fost răspuns

sisteme de ecuatii : 2x-y-2=0 si x+3y+8=0

Răspuns :

AlecsRO

2x - y - 2 = 0 => 2x -2 = y

x + 3y + 8 = 0 => x + 6x - 6 + 8 = 0

7x + 2 = 0

7x = -2

x =-2/7

y = -4/7 - 2

y = -18/7

x=y+2/2

y+2/2+3y+8=0

y+2+6y+16=0

7y+18=0

y=-18/7

x=(-18/7+2)/2

x=(-18+14)/7/2

x=-4/14

Alte intrebari