Răspuns :
528+247=
637+247=
136+247=
219+247=
605+247=
436+247=
509+247=
247+247=
637+247=
136+247=
219+247=
605+247=
436+247=
509+247=
247+247=
528 + 247 = 775
637 + 247 = 884
136 + 247 = 383
219 + 247 = 466
605 + 247 = 852
436 + 247 = 683
509 + 247 = 756
247 + 247 = 494