Răspuns :
a+b = 90
a : b = 5
a = 5b
/-----/-----/-----/-----/-----/a
/-----/b } 90
90 : 6 = 15 reprezintă un segment, al doilea nr
5 × 15 = 75 primul nr
a : b = 5
a = 5b
/-----/-----/-----/-----/-----/a
/-----/b } 90
90 : 6 = 15 reprezintă un segment, al doilea nr
5 × 15 = 75 primul nr
a+b=90
b=a:5
a |........||........|........|........|........|
b |........|
90:6=15 (b)
15×5=75 (a)
verificare :
15+75=90
b=a:5
a |........||........|........|........|........|
b |........|
90:6=15 (b)
15×5=75 (a)
verificare :
15+75=90