Răspuns :
a-b=36
b=3a/5
a-3a/5=36
(5a-3a)/5=36
2a=36x5
a=180/2
a=90
b=3a/5=(3x90)/5
b=54
90-54=36
b=3a/5
a-3a/5=36
(5a-3a)/5=36
2a=36x5
a=180/2
a=90
b=3a/5=(3x90)/5
b=54
90-54=36
a-b=36
a=5 segmente
b=3 segmente
a /...../....../...../...../....../
b /...../...../...../-----36-/
5 parti-3 parti=2 parti
2 parti=36
1 parte=36:2=18
a=5x18=90
b=3x18=54
Proba 90-54=36