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a fost răspuns

a+b+c=22
a=b×2
a=c×3
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a=? , b=? , c =?

Răspuns :

[tex]a+b+c = 22 \\ a=2b \\ a=3c \\ 2b=3c=\ \textgreater \ c= \frac{2b}{3} \\ 2b+b+ \frac{2b}{3}=22 \\ \frac{6b}{3}+ \frac{3b}{3} + \frac{2b}{3}=22 \\ 11b=22*3 \\ b= \frac{22*3}{11} \\ b=6 \\ a=12 \\ c=4[/tex]

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