Question

Cine ma poate ajuta? Dau coroana

Answer 1

a)

( - 16 + 22 ) × [ ( - 7 ) × ( - 8 ) + ( + 4) × ( - 9 ) ] = 120

= 6 × (56 - 36 ) =

= 6 × 20 =

= 120

b)

( - 4 ) × [ ( - 13 ) × ( - 6 ) - ( + 14 ) × ( + 4 ) + ( - 5 ) × ( + 3 ) ] = - 28

= ( - 4) × ( 78 - 56 - 15 ) =

= ( - 4 ) × ( 22 - 15 ) =

= ( - 4 ) × 7 =

= - 28

c)

[ ( - 8 ) × ( - 16 ) + 6 × ( - 24 ) - ( - 5 ) × ( - 18 ) ] : ( - 68 + 15 ) = 2

= ( 128 - 144 - 90 ) : ( - 53) =

= ( - 16 - 90 ) : ( - 53) =

= ( - 106 ) : ( - 53) =

= 2

d)

( - 6) × { ( - 28 ) × ( - 3) - ( - 25 ) × ( - 4 ) - [ ( - 8 ) × ( + 3) - ( - 5 ) × ( + 2) ] } = 12

= ( - 6 ) × [ 84 - 100 - ( - 24 + 10 ) ] =

= ( - 6 ) × ( - 16 + 14 ) =

= ( - 6 ) × ( - 2) =

= 12