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Stiind ca x/y=9/16 (x supra y = 9 supra 16) si 3y-2x=24 , aflati x si y.
URGENT VA ROG ! :(


Răspuns :

x/y = 9/16, 16x = 9y, x = 9y/16
inlocuiesti x in a doua ecuatie

3y - 2* 9y/16 = 24, aduci la numitor comun, care este 8
 8*3y -9y = 24 * 8
24y - 9y = 192
15y = 192
y = 192/15 , y = 64/5

x= 9/16*y, x = 9/16 *64/5, x =36/5