Răspuns :
a
a+2a /a+3a = 54
a=?
a [----------------] a [----------------------]
= 54 sau 3a [--------------][--------------][---------------]
2a [----------------][------------------] 54:3=18
54: 2=27 a=18
a=27
a + (a × 2( + (a × 3) = 54
6a = 54
a = 54 : 6
a = 9
/_______/
/_______//_______/ } 54
/_______//_______//_______/
6/_______/=54
1 segment = 54:6 = 9