Svp pitier pitier pitier pitier

Exercice 1
a) A=7+2x(5+7)
=7+2x12
=7+24
=31
B=28-(5+6x3)
=28-(5+18)
=28-23
=5
C=7x[4-(1+2)]x9
=7x[4-3]x9
=7x1x9
=63
b) D=27+19+3+11
=30+30
=60
E=5x25x2x4
=50x20
=1000
F=7x0,5x3x20
=21x10
=210

Exercice 2
(84,70+19,50x2):2=22,85