Sagot :
Bonjour,
Les parenthèses d'abord
priorité aux multiplications
A = 12 + [3 x [5+ (4 × 7) + 2] + (8 × 3)
= 12 + [3 x [5+ 28 + 2] + 24
Les crochets:
= 12 + [3 x [35] + 24
12 + 105 +24
= 141
B= 25 [12 (3+4)]
= 25 [12 *7]
=25* 19
= 475
C= 81+ [(7+21) - 13] (17-9)
= 81+ [(28) - 13] (8)
= 81+ [15]* (8)
= 81 + 120
= 201
D = [(7,8+ 4,5) +11] × (4+3)
= [(12,3 ) +11] × (7)
= 23,3 x7
= 163,1
E = 6+ [(7 x 2) - (1,1 × 2)]
= 6+ [(14) - (2,2)]
= 6+ [14,22]
= 6+ 14,22
= 20,22
