LOLADUBEAUX4
Answered

a. 3 x 5 - (5 - 12)
b. 5 - (3-5x6)
c. 4 X (2-3 x 9) +7
d. 9 x (-2- 4 x 5) - 3
e. -63: (2-3 x 7 + 5 x 2) - 11
f. 48 : (2 - 12:4-7) - 4
Merci d avance à ceux qui m aiderons
4ème

Sagot :

PETITCACTUS

Réponse:

Bonjour,

a. 3×5-(5-12)

=3×5-(-7)

=3×5+7

=15+7

=22

b. 5-(3-5×6)

=5-(3-30)

=5-(-27)

=5+27

=32

c. 4×(2-3×9)+7

=4×(2-27)+7

=4×(-25)+7

= -100+7

= -93

d. 9×(-2-4×5)-3

=9×(-2-20)-3

=9×(-22)-3

= -198-3

= -201

e. -63:(2-3×7+5×2)-11

= -63:(2-21+10)-11

= -63:(-9)-11

= 7-11

= -4

f. 48:(2-12:4-7)-4

= 48:(2-3-7)-4

= 48:(-8)-4

= -6-4

= -10

Voilà