120:440*100%=1200/44 %=300/11 %=
27 3/11 %
5:395*100%= 1/79*100%=100/79 %=
1 21/79%
AB:BC = 3:2 = 15:10
BC:AC = 5:4 = 10:8
AB:BC:AC = 15:10:8
15+10+8=33
AB = 49.5м * (15/33) = 22.5м
BC = 49.5м * (10/33) = 15м
AC = 49.5м * (8/33) = 12м
Ответ:
<em>6 * 5n - 4n = 480</em>
<em>30n - 4n = 480</em>
<em>26n = 480</em>