Question

Ajutooooor !!!!!! Dau coroana! Urgent!

Answer 1

Răspuns:

FB+S=30

Explicație pas cu pas:

(FB+B+S):3=16

FB=2/3 din S

FB=2S/3

B=1/3 din S

B=S/3

(2S/3+S/3+S):3=16

5S/3+S=16×3

8S/3=48

8S=3×48

S=144:8

S=18

FB=(2×18):3

FB=36:3=12

B=18:3=6

FB+S=12+18=30