Răspuns:
Explicație pas cu pas:
( - 9) + ( - 6) = - 9 - 6 = - 15
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( - 9 ) - ( - 6) = - 9 + 6 = - 3
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125 - ( + 32) = 125 - 32 = 93
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125 - ( - 32) = 125 + 32 = 157
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15 + ( - 30) - ( - 20) + ( + 2) - ( + 15) = - 8
= 15 - 30 + 20 + 2 - 15 =
= - 15 + 22 - 15 =
= 7 - 15 =
= - 8
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- 25 - ( +12) - 14 + ( + 8) = - 43
= - 25 - 12 - 14 + 8 =
= - 37 - 6 =
= - 43
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20 + 25 - ( - 24 ) + ( - 30 ) = 39
= 45 + 24 - 30 =
= 69 - 30 =
= 39
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- ( - 80 ) + ( - 60) - ( + 25) + ( + 10 ) = 5
= + 80 - 60 - 25 + 10 =
= 20 - 25 + 10 =
= - 5 + 10 =
= 5
