aidez moi ci vous plait Developper et réduire chacune des expressions littérales suivantes A=4 x5sc ; b= 9x 7sc; c=(4sc -6)x10+1 ; d=2x(6sc+6)-4sc+6; E=(5sc-1

Bonjour,

A = 4 × 5sc = 20sc

B = 9 × 7sc = 63sc

C = (4sc - 6) × 10 + 1 = 4sc × 10 - 6 × 10 + 1

C = 40sc - 60 + 1 = 40sc - 59

D = 2 × (6sc + 6) - 4sc + 6 = 12sc + 12 - 4sc + 6 = 8sc + 18

E = (5sc - 1) × 2 + 5sc = 10sc - 2 + 5sc = 15sc - 2

Bonne journée !

Réponse :

Bonjour

Explications étape par étape

Développement, réduction

A = 4 X 5 sc = 20 sc

B = 9 X 7 sc = 63 sc

C = (4 sc -6 ) X 10 +1 = 40 sc -60 +1 = 40sc -59

D = 2 X (6sc + 6) - 4sc + 6 = 12sc + 12 - 4sc + 6 = 8sc + 18

E = (5sc - 1) X 2 + 5sc = 10sc - 2 + 5sc = 15sc - 2