Question

Suma a 5 nr consecutive este 105. Det numerele.

Answer 1

a+a+1+a+2+a+3+a+4=105
5a+10=105
5a=95
a=95:5=19
Numerele sunt 19,20,21,22,23

Answer 2

Notam nr. cu a,b,c,d si e.

a+b+c+d+e=105

b=a+1 c=a+2 d=a+3 e=a+4

a  l__________l

b  l__________l___l

c   l__________l___l___l                             105

d   l__________l___l___l___l

e   l__________l___l___l___l___l

5a=105-10

5a=95

  a=95:5  a=19    b=19+1  b=20   c=19+2  c=21   d=19+3  d=22    e=19+4  e=23

Nr. sunt 19 20  21 22 23 24