Bonsoir,
A = 3(x + 5)
distributivité:
3*x =3x
3*5=15
=> 3x+15
B = 5(6 - x)
= 30 -5x
C= 10(3 + x)
=30 +10x
D = 7(x - 3)
= 7x -21
E= 4(2x + 3)
=8x +12
F= 2(5x-9)
= 10x -18
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Bonsoir,
A = 3(x + 5)
distributivité:
3*x =3x
3*5=15
=> 3x+15
B = 5(6 - x)
= 30 -5x
C= 10(3 + x)
=30 +10x
D = 7(x - 3)
= 7x -21
E= 4(2x + 3)
=8x +12
F= 2(5x-9)
= 10x -18