Răspuns:
Explicație pas cu pas:
1)
- 1 + ( - 3 ) + ( + 5 ) - ( + 3 ) - ( - 7 ) = 5
= - 1 - 3 + 5 - 3 + 7 =
= - 4 + 2 + 7
= - 2 + 7 =
= 5
_____________________________
2)
2 × ( - 3 + 4 - 9 ) - ( - 5 ) = - 11
= 2 × ( 1 - 9 ) + 5 =
= 2 × ( - 8 ) + 5 =
= - 16 + 5 =
= - 11
________________________
3)
( - 25) : ( - 5) + 16 : ( - 2 ) = - 3
= + 5 - 8 =
= - 3
_______________________
4)
- 3 × ( - 1 + 5 - 9 ) + ( - 1 )² × (-10 ) × 0 = 15
= - 3 × ( 4 - 9 ) + 1 × 0 =
= - 3 × ( - 5 ) + 0 =
= + 15
_______________________________
5)
( - 2)³ + 1⁰ + ( - 1 )⁴ - ( - 3)³ = 21
= - 8 + 1 + 1 - ( - 27) =
= - 6 + 27 =
= 21
