Question

suma a 5 numere consecutive este 105.Aflati nr

Answer 1

a+a+1+a+2+a+3+a+4=5a+10
=>5a+10=105
=>5a=105-10
=>5a=95
=>a=95:5
=>a=19
=>a+1=20
    a+2=21
    a+3=22
    a+4=23
              

Answer 2

a+b+c+d+e=105
a+(a+1)+[(a+1)+1]+{[(a+1)+1]+1}+{{[(a+1)+1]+1}+1} =105
5*a+10=105
5*a=105-10
5*a=95
a=95:5
a=19

RASPUNS: a = 19
                  b = 20
                  c = 21
                  d = 22
                  e = 23