Question

Suma a cinci numere consecutive impare este 75.Afla numerele.

Answer 1

numerele sunt 
x,x+1,x+2,x+3,x+4

x+x+1+x+2+x+3+x+4=75
5x+10=75
5x=65
x=13

numerele sunt 13,14,15,16,17

Answer 2

a |-----|
b |-----|+1|
c |-----|+1|+1|
d |-----|+1|+1|+1|
e |-----|+1|+1|+1|+1|       } 75.

75 - 10 = 65   ( 5 parti egale cu a)
65 : 5 = 13 (a)
13 +1 = 14 (b)
13 +1+1 = 15 (c)
13 +1+1+1 = 16 (d)
13 +1+1+1+1 = 17 (e)
Verificare :17 + 16 +15 +14 +13 = 75  ( suma numerelor).