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Suma a cinci numere naturale consecutive este 100.Care sunt numerele?

Răspuns :

a+a+1+a+2+a+3+a+4=100
5a=100-10
a=90:5
a=18
nr sunt 18,19,20,21,22
a+b+c+d+e=100
a=x
b=x+1
c=x+2
d=x+3
e=x+4
x+x+1+x+2+x+3+x+4=100
5x+10=100
5x=100-10
5x=90
x=90:5
x=18
a=18
b=18+1=19
c=18+2=20
d=18+3=21
e=18+4=22