Question

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Answer 1

Răspuns:

Explicație pas cu pas:

not, cu x -nr ovinelor

oi: 3/7*x

miei: 4/6*(x-3/7x)=2/3(7/7x-3/7x)=2/3*4/7x=8/21x

berbeci:16

x=oi+miei+berbeci

x=3/7x+8/21x+16

x-3/7x-8/21x=16  

21/21x-9/21x-8/21x=336/21

21x-9x-8x=336

4x=336

x=336:4

x=84 (ovine)