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Ex.3
Va implor,ajutor


Ex3 Va Implorajutor class=

Răspuns :

2X+3Y=24
X/Y=3/4 => 4X=3Y => X=3Y/4
inlocuim in relatia 2x+3y=24
2*3y/4 +3y=24  (aducem la acelasi numitor)
(2*3y+3y*4)/4=24
(6y+12y)/4=24
18y=96
y=96/18 simplificam fractia cu 6
y=16/3

x=3y/4
x=(3*16/3)/4
x=16/4
x=4