Merci de m aider
Développer puis réduire chaque expression
A) 6(-4x -5) +7
B) -5 (6-4y) -5y
C) 5 (-2a + 7) + 3a
D) 3b (5-6b) -9b

By: USER1363
25 Agustus 2025 mathematiques 5 minutes
4.5
158 views 158 comments 13 shares

Question

Grade: Education Subject: mathematiques
Merci de m aider
Développer puis réduire chaque expression
A) 6(-4x -5) +7
B) -5 (6-4y) -5y
C) 5 (-2a + 7) + 3a
D) 3b (5-6b) -9b
Asked by:
158 Viewed 158 Answers

Answer (158)

Best Answer
(276)
bonjour,

A) 6(-4x -5) +7 =
-24x-30+7=
-24x-23

B) -5 (6-4y) -5y=
-30+20y-5y=
15y-30

C) 5 (-2a + 7) + 3a =
-10a+35+3a=
-7a+35

D) 3b (5-6b) -9b=
15b-18b²-9b=
-18b²+6b

Answered on 25 Agustus 2025
(160)
a)  -24x - 30 + 7 = - 24x - 23
b)   - 30 + 20y - 5y = - 30 + 15y
c)   - 10a +35 +3a =  -7a + 35
d)    15b - 18b au carré - 9b =  18b au carré +4b
Answered on 25 Agustus 2025

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