245 + 721 – 5 x ( 121 – 15 )–6:3​

Răspuns :

=966-605+75-2
=361+73
=434

245 + 721 - 5 × ( 121 - 15 ) - 6 : 3 =

966 - 5 × 106 - 2 =

966 - 530 - 2 =

436 - 2 = 434