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Stiind ca:
a) x/y=5/6 calculati 3x+2y/3x
b) 2x/2x+3y=1/5 calculati x/y


Răspuns :

x/y=5/6 rezulta ca x=5k si y=6k

3(5k)+2(6k)/3(5k)
=15k+12k /15k
15 cu 15 se simplifica =12k