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=
-
12 3x 8 =
13 3x-2y =
14 9ab:(-2) =
15 - 7w.x =
16 2ab:(-3cd) =
17 - 4xy • (-2xz) =
18 mn:4.(-m) =
19 2xy:5y:(-y) =
20 3x-2y 2x:3y
21 – 3a:(-36):(-30) =
22 10d.(-2a)-3c.(-4d) =
=
.
=
=
=
-
2 et 7 = -5

Sagot :

Réponse:

123 x 8 = 984

133 × -2 y = - 266

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