Question

Suma a trei numere consecutive este egala cu 123. Aflati numerele

Answer 1

a+a+1+a+2=
3a+3=123
3a=123-3
3a=120
a=120:3
a=40(primul nr)
a+1=40+1=41(al doilea nr)
a+2=40+2=42(al treilea nr)
v=>40+41+42=123