Bonsoir,
1) 4/5 x 30
= 120/5
= 24
24 eleves pratiquent du sport
2) 5/6 x 30
= 150/6
= 25
25 eleves sont inscrits a la bibliotheque
A = 7 x 3² - 2³
A = 7 x 9 - 8
A = 63 - 8
A = 55
B = (14 - 6)² - (10 - 3)²
B = 196 - 168 + 36 - (100 - 60 + 9)
B = 64 - 100 + 60 - 9
B = 15
C = (2³ x 7 - 35) / 3
C = (8 x 7 - 35) / 3
C = (56 - 35) / 3
C = 21 / 3
C = 7
D = [(4 - 9)² x 2³] / 5²
D = [(16 - 72 + 81) x 2³] / 5²
D = (25 x 8) / 25
D = 200 / 25
D = 8
Bonne soiree
