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Exercice 3:
Calcule en respectant les priorités opératoires :
A= 5-10x(-5)-2x9-2+9
B= 2-7x(-3+11)
C=-7+(-5)+(-3) + (-1) + (-12) !!

Sagot :

AYUDA

bonsoir aussi !!

A= 5-10x(-5)-2x9-2+9

  = 5 + 50 - 18 - 2 + 9 = 44

B= 2-7x(-3+11)

 = 2 - 7 x 8 = 2 - 56 = - 54

C=-7+(-5)+(-3) + (-1) + (-12)

=  - 7 - 5 - 2 - 1 - 12 = - 27 !!

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