Exercice 3: (7 points) Supprime les parenthèses puis simplifie et réduis les expressions. a) 2n-(n-5) b) 8t+ (5t+6) e) 10+ (m+3) (3 m² + 6 m) d) 10 y+2+(-y-7) c) 27-(-8-2x) f) x 8 [2+4x-(9-5x)]

Question

Grade: Education Subject: mathematiques

Exercice 3: (7 points) Supprime les parenthèses puis simplifie et réduis les expressions.
a) 2n-(n-5)
b) 8t+ (5t+6)
e) 10+ (m+3) (3 m² + 6 m)
d) 10 y+2+(-y-7)
c) 27-(-8-2x)
f) x 8 [2+4x-(9-5x)]

Asked by: USER3692

236 Viewed 236 Answers

Answer (236)

USER7814

Best Answer

(36)

deffvfffggvgfvgrghrghffhgrhgtybgdghh

Answered on 27 Agustus 2025

USER5751

(456)

Bonjour;

a) 2n-(n-5)

= 2n-n+5

= n+5

b) 8t+ (5t+6)

= 8t+5t+6

= 13t+6

e) 10+ (m+3) (3 m² + 6 m)

= 10 +3m³ +6m² +9m² +18m

= 3m³ +15m² +18m +10

d) 10 y+2+(-y-7)

= 10+y +2-y -7

= 5

c) 27-(-8-2x)

= 27+8 +2x

= 2x+35

f)?? x 8 [2+4x-(9-5x)]

Answered on 27 Agustus 2025

Exercice 3: (7 points) Supprime les parenthèses puis simplifie et réduis les expressions. a) 2n-(n-5) b) 8t+ (5t+6) e) 10+ (m+3) (3 m² + 6 m) d) 10 y+2+(-y-7) c) 27-(-8-2x) f) x 8 [2+4x-(9-5x)]

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Answer (236)

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Exercice 5. Qui suis-je ? Je suis un nombre pair entre 400 et 800, divisible par 3, multiple de 13 et dans la table de 5.

Exercice 3: (7 points) Supprime les parenthèses puis simplifie et réduis les expressions.
a) 2n-(n-5)
b) 8t+ (5t+6)
e) 10+ (m+3) (3 m² + 6 m)
d) 10 y+2+(-y-7)
c) 27-(-8-2x)
f) x 8 [2+4x-(9-5x)]

alcatuiti o propozitie in care semnul exclamaroi ii indica cititorului un indemn.

mixture with two or more substances that are evenly mixed

help me guys please

Exercice 5. Qui suis-je ?
Je suis un nombre pair entre 400 et 800, divisible par 3, multiple de
13 et dans la table de 5.