Bonsoir j’ai besoin d’aide sur ces 3 exercices,c’est pour demain !

bonsoir

EX 8

a. AB = x + 8
b. AB = 13 - 3x

EX 32

a.
E = 5 x 3 = 15
F = 2 x (4 + 5 x 3) = 2 x 19 = 38
G = 2 + 3 x 3 = 2 + 9 = 11

b.
E = 5 x 10 = 50
F = 2 x (4 + 5 x 10) = 2 x 54 = 108
G = 2 + 3 x 10 = 32

c.
E = 5 x 0.1 = 0.5
F = 2 x (4 + 5 x 0.1) = 2 x 4.5 = 9
G = 2 + 3 x 0.1 = 2.3

EX 34

a.
A = 5 + 3 + 5 x 3 = 8 + 15 = 23

b. A = 1.5 + 2 + 1.5 × 2 = 3.5 + 3 = 6.5