5+[6×(6+87)+21]×5+54+21+90

Răspuns :

5+[6×(6+87)+21]×5+54+21+90=3065

6+87=93

6×93=558

558+21=579

579×5=2895

5+2895=2900

2900+54=2954

2954+21=2975

2975+90=3065

5+[6×(6+87)+21]×5+54+21+90=3065
5+(6×93+21)×5+54+21+90=3065
5+(558+21)×5+54+21+90=3065
5+579×5+54+21+90=3065
5+2895+54+21+90=3065
2900+54+21+90=3065
2954+21+90=3065
2975+90=3065