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Magie78
@Magie78
May 2019
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Bonsoir j’aurais besoin d’aide pour le numéro 56 svp c’est niveau 3eme.
Merci d’avance
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trudelmichel
Verified answer
Bonjour,
1)
f(x)=-4
-7x+3=-4
-7x=-4-3
-7x=-7
x=1
2)
f(x)=17
-7x+3=17
-7x=17-3
-7x=14
x=-2
3)
f(x)=-18
-7x+3=-18
-7x=-18-3
-7x=-21
x=3
4)
f(x)=20
-7x+3=20
-7x=20-3
-7x=17
x=-17/7
1 votes
Thanks 1
Arksabien
Verified answer
56.
f(x) = -7x+3
a. -7x+3 = -4
-7x = -7
x = 1
b. -7x+3 = 17
-7x = 14
x = -14/7 = -2
c. -7x+3 = -18
-7x = -21
x = 21/7 = 3
d. -7x+3 = 20
-7x = 17
x = -17/7 = -2.43
0 votes
Thanks 1
magie78
Okk mercii beaucoup
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Lista de comentários
Verified answer
Bonjour,1)
f(x)=-4
-7x+3=-4
-7x=-4-3
-7x=-7
x=1
2)
f(x)=17
-7x+3=17
-7x=17-3
-7x=14
x=-2
3)
f(x)=-18
-7x+3=-18
-7x=-18-3
-7x=-21
x=3
4)
f(x)=20
-7x+3=20
-7x=20-3
-7x=17
x=-17/7
Verified answer
56.f(x) = -7x+3
a. -7x+3 = -4
-7x = -7
x = 1
b. -7x+3 = 17
-7x = 14
x = -14/7 = -2
c. -7x+3 = -18
-7x = -21
x = 21/7 = 3
d. -7x+3 = 20
-7x = 17
x = -17/7 = -2.43