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Stiind ca {x,y,z} sunt direct proportionale cu {9,4,6} ,aflat x+3y/2x+z .
Plsss !!!


Răspuns :

x=9k
y=4k
z=6k
(9k+3*4k)/(2*9k+6k)=
=(9k+12k)/(18k+6k)=
=21k/24k=
=21/24=
=7/8