Răspuns :
x+x+1+x+2=906
3x+3=906
3x=906-3
x=903:3
x=301
x+1=301+1=302
x+2=301+2=303
301,302,303
3x+3=906
3x=906-3
x=903:3
x=301
x+1=301+1=302
x+2=301+2=303
301,302,303