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Elise141
@Elise141
May 2019
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J’aurais besoin de quelqu’un qui m’explique ?pour le 22 et le 23
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trudelmichel
Bonjour,
10/-12=-5/a
alors
10xa=-5x-12
10a=60
a=60/10
a=6
10/-12=-5/6
-5/6=a/30
alors
-5x30=6xa
-150=6a
a=-150/6
a=-25
-5/6=-25/30
-25/30=45/c
alors
30x45=-25xc
1350=-25c
c=1350/-25
c=-54
-25/30=45/-54
-45/54=-15/d
alors
-45xd=54 x-15
-45d=-810
d=-810/-45
d=-18
-45/54=-15/18
je vous laisse le second
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10/-12=-5/a
alors
10xa=-5x-12
10a=60
a=60/10
a=6
10/-12=-5/6
-5/6=a/30
alors
-5x30=6xa
-150=6a
a=-150/6
a=-25
-5/6=-25/30
-25/30=45/c
alors
30x45=-25xc
1350=-25c
c=1350/-25
c=-54
-25/30=45/-54
-45/54=-15/d
alors
-45xd=54 x-15
-45d=-810
d=-810/-45
d=-18
-45/54=-15/18
je vous laisse le second