Question

suma a 5 numere consecutive impare este 75. afla numerele

Answer 1

Fie primul numar = a

a+ a+2 + a+4 + a+6 + a+8 = 75

5a + 2+4+6+8 =  75
5a = 75 - 20
5a = 55
a=55/5
a=11
Numerele sunt : 11,13,15,17,19

Answer 2

a + a + 2 + a + 4 + a + 6 + a + 8 = 75

5a = 75 - ( 2 + 4 + 6 + 8 )

5a = 75 - 20

5a = 55

a = 55 : 5

a = 11

a + 2 = 11 + 2

a + 2 = 13

a + 4 = 11 + 4

a + 4 = 15

a + 6 = 11 + 6

a + 6 = 17

a + 8 = 11 + 8

a + 8 = 19