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x/y=2/11 aflati 5y/3x+5y va rog dau coroana !!!

Răspuns :

x/y=2/11=k

x=2k

y=11k

5y/(3x+5y)=(5×11k)/(3×2k+5×11k)=

=55k/(6k+55k)=55k/61k=55/61

Răspuns:

Explicație pas cu pas:

x/y = 2/11

x = 2y/11

3x + 5y = 6y/11 + 5y = 6y/11 + 55y/11 = 61y/11

5y/(3x + 5y) = 5y/(61y/11) = 55/61