A=-5-3x (5 -(5 - 13)) B=(7 - 12): (12 – (1 + 8 x 2)) C=-20 + ((-3)*(-7 – 3) – 16) Quelqu’un peut m’aider svp

bonjour

A=-5-3x (5 -(5 - 13))

=-5-3x(5-(-8))

=-5-3x(13)

=-5-39

=-44

B=(7 - 12): (12 – (1 + 8 x 2))

=(-5)÷(12-(1+16))

=(-5)÷(12-(17))

=-5÷-5

=1

C=-20 + ((-3)*(-7 – 3) – 16)

=-20+(-3*(-10)-16))

=-20+30-16

=-6