[12x5-(84:4-117:9)x5]:5

Răspuns :

(60-(21--13)x5)÷5
(60-8x5)÷5
(60-40)÷5
20÷5
4
[ 12 × 5 - ( 84 : 4 - 117 : 9 ) × 5 ] : 5 =
[ 60 - ( 21 - 13 ) × 5 ] : 5 =
( 60 - 8 × 5 ) : 5 =
( 60 - 40 ) : 5 =
20 : 5 = 4