👤

Calculer en detaillant les etapes
A = 42 – (4 + 35) – (-12 + 5)
B = 22 – [7 – (-5 – 6)]
C = -49 ÷ 7 – 6 × 2 + 3
D = 9 × 6 – [7 – 8 × (-3 + 5)]
E = -50 ÷ 2 × 3 ÷ (-5)
F = 10 × 9 × 8 × (-7) × (-6) × 5 × 4 × (-2) × (-1) × 0
Svp c'est pour mon dm en math et j'ai des difficultés en math Svp !!!!!!!!!!!


Répondre :


A = 42 – (4 + 35) – (-12 + 5)
   = 42-39-(-12+5)
   = 3-(-12+5)
   = 3-(-7)
   = 10
 
B = 22 – [7 – (-5 – 6)]
   = 22- [7-(-11)]
   = 22-[ 18 ]
   = 22-18
   =4

C = -49 ÷ 7 – 6 × 2 + 3
   = -49÷ 7 -12+3
   = -49÷ 7 - 9
   =-7-9
   =-16

 D = 9 × 6 – [7 – 8 × (-3 + 5)]
     =54 - [ 7 - (8 x -3 + 8 x 5)]
     = 54 - [ 7- ( -24 + 40) ]
     = 54- [ 7- 16]
     = 54 -[-9]
     = 54 +9
     = 63

E = -50 ÷ 2 × 3 ÷ (-5)
   = -25 x (-0.6)
   = 15

F = 10 × 9 × 8 × (-7) × (-6) × 5 × 4 × (-2) × (-1) × 0
   = 90 x (-56) x (-30) x (-8) x0
   = -5040 x 240 x 0
   = -1209600 x 0
   = 0