Răspuns:
Explicație pas cu pas:
a)
( - 28 - 14 ) : ( - 7) = ( - 42 ) : ( - 7 ) = 6
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b)
- 3 + 3 × ( - 4 ) - 2 - ( - 15 ) : 3 - ( - 6 ) =
= - 3 - 12 - 2 - ( - 5) + 6 =
= - 15 - 2 + 5 + 6 =
= - 17 + 5 + 6 =
= - 12 + 6 =
= - 6
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c)
- 20 : ( - 8 + 4 ) - ( - 4) = 9
= - 20 : ( - 4) + 4 =
= + 5 + 4 =
= 9
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d)
2 : ( - 1 ) - [ 1 - ( 6 - 9) ] : 2 = - 4
= - 2 - ( 1 + 3 ) : 2 =
= - 2 - 4 : 2 =
= - 2 - 2 =
= - 4
