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x/2=y/5=z/11 stiind ca x+y=28 determinati x y z

Răspuns :

x/2=y/5=z/11=k
x/2=k⇒x=2k
y/5=k⇒y=5k
z/11=k⇒z=11k
x+y=28⇒2k+5k=28⇒7k=28⇒k=28:7=4
x=2k⇒x=4x2=8
y=5k⇒y=4x5=20
z=11k⇒z=4x11=44