Răspuns :
726=121(4X-514)
726=484X-62194
726+62194=484X
62920=484X
X=62920÷484
X=130
verificare
726=121(4x130-514)
726=121(520-514)
726=121x6
726=726
726=484X-62194
726+62194=484X
62920=484X
X=62920÷484
X=130
verificare
726=121(4x130-514)
726=121(520-514)
726=121x6
726=726