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Sagot :

A) 2x3=6
B)3x3=9
C) 5x3-1= 15-1=14
D) 5xX-5x1= 5x-1
A) 5+3x1= 3+5= 8
B) 5+3x4 = 5+12= 17
LULU1717

Réponse:

salut

ex.12

A=2x B=x.au carré C=5x-1 D=5(x-1)

A=2×3 B=3×3 C=5×3-1 D=5(3-1)

A=6 B=9 C=14 D=5×2

D=10

ex.13

A=5+3×x B=5+3×x

A=5+3×1 B=5+3×4

A=5+3 B=5+12

A=8 B=17

voilà j'espère t'avoir aidé

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