Axoloto82ask
résolu

24 Développer les expressions suivantes.
A = 3(x + 5)
C = 10(3 + x)
E = 4(2x + 3)
B = 506 - x)
D = 7(x - 3)
F= 2(5x-9)

Répondre :

Gabrielle15ask

A = 3×x+3×5 = 3x+15

C = 10×3+10×x = 30+10x

E = 4×2x+4×3 = 8x+12

B = ?

D = 7×x-7×3 = 7x-21

F = 2×5x-2×9 = 10x-18

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