Răspuns :
a + b + c = 59
b = 2a
b = c - 9
c = b + 9
c = 2a + 9
a + 2a + 2a + 9 = 59
5a = 59 - 9
a = 50 : 5
a = 10
b = 2 * 10
b = 20
c = 2 * 10 + 9
c = 29
b = 2a
b = c - 9
c = b + 9
c = 2a + 9
a + 2a + 2a + 9 = 59
5a = 59 - 9
a = 50 : 5
a = 10
b = 2 * 10
b = 20
c = 2 * 10 + 9
c = 29
/___/primul
/___/___/al doilea
/___/___/+9 al treilea
Total59
59-9=50
1+2+2=5 parti egale
50:5=10 primul nr
10×2=20 al doilea nr
10×2+9=29 al treilea nr
V 10+20+29=59
/___/___/al doilea
/___/___/+9 al treilea
Total59
59-9=50
1+2+2=5 parti egale
50:5=10 primul nr
10×2=20 al doilea nr
10×2+9=29 al treilea nr
V 10+20+29=59