calculer A= 8-(19-25) + (16-28) B=15+(-13-17) + (-18+32) C=19-(-15+29) - (19-37) D= -7+(34-18) - (7-15)
Mathématiques
piquetpatrick
Question
calculer
A= 8-(19-25) + (16-28)
B=15+(-13-17) + (-18+32)
C=19-(-15+29) - (19-37)
D= -7+(34-18) - (7-15)
A= 8-(19-25) + (16-28)
B=15+(-13-17) + (-18+32)
C=19-(-15+29) - (19-37)
D= -7+(34-18) - (7-15)
1 Réponse
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1. Réponse MrEagle
A = 8 - ( 19 - 25 ) + ( 16 - 28 )
= 8 + 6 - 12
= 14 - 12
= 2
B = 15 + ( -13 - 17 ) + ( -18 + 32 )
= 15 - 30 + 14
= -15 + 14
= -1
C = 19 - ( -15 + 29 ) - ( 19 - 37 )
= 19 - 14 + 18
= 5 + 18
= 23
D = -7 + ( 34 - 18 ) - ( 7 - 15 )
= -7 + 16 + 8
= 9 + 8
= 17