-15-9(-5+3b) -5(6-3z)-9+z 12x-4(6-3x)
Mathématiques
nathpierre31pierre
Question
-15-9(-5+3b)
-5(6-3z)-9+z
12x-4(6-3x)
1 Réponse
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1. Réponse winner123
Bonsoir
-15-9(-5+3b) = -15 +45 -27b = -27b + 30
-5(6-3z)-9+z = -30 +15z -9 +z = 16z - 39
12x-4(6-3x) = 12x - 24 + 12x = 24x -24