Răspuns :
tei = 7 * stejari
stejari = tei - 30
stejari = 7 * stejari - 30=
7stejari - stejar= 30
6 stejari = 30
stejari = 30:6
stejari = 5
tei = 7 * 5= 35
poti scrie prescurtat "s" si "t"
stejari = tei - 30
stejari = 7 * stejari - 30=
7stejari - stejar= 30
6 stejari = 30
stejari = 30:6
stejari = 5
tei = 7 * 5= 35
poti scrie prescurtat "s" si "t"
T ___/___/___/___/___/___/___/
S___/
7 SEGMENTE - 1 SEGMENT =6 SEGMENTE
6 seg. =30
30 /6 =5
s =5
t =5 * 7 =35
S___/
7 SEGMENTE - 1 SEGMENT =6 SEGMENTE
6 seg. =30
30 /6 =5
s =5
t =5 * 7 =35