Răspuns:
Explicație pas cu pas:
a)
- 15 - 18 + ( 13 - 24 ) × ( - 10) = 77
= - 33 + ( - 11) × (- 10 ) =
= - 33 + ( + 110 ) =
= - 33 + 110 =
= 77
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b)
( - 17 + 13) × [ ( 3 - 9 + 10 ) : ( 25 - 27 ) ] = 8
= ( - 4 ) × [ ( - 6 + 10 ) : ( - 2 )]=
= ( - 4 ) × [ 4 : ( - 2 )] =
= (- 4 ) × ( - 2 ) =
= + 8