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MANUELAAROSA93
Answered

Bonsoir , pouvez-vous m’aider s’il vous plaît pour cette exercice de maths, merci d’avance.

Résoudre ces équations :

a. 4x = 3/5

b. 2/3 x = 7

c. 6/5 x = -7/11

d. -7x = 4/-3

e. -3/2 x = 5

f. -5/7 x = -2/-3


Merci .

Sagot :

a. 4x =3/5
4x/4 = (3/5)/4
x = 0,15

b. 2/3x =7
(2/3x)/2/3 = 7/(2/3)
x = 10,5

c. 6/5x = -7/11
(6/5x)/6/5 = (-7/11)/6/5
x = -35/66

Pour la suite j’espère que tu as compris la démarche je te laisse continuer seul ;)

Bonsoir,

4x = 3/5 ⇒ x = (3/5)/4 = 3/20

2/3 x = 7 ⇒ x = 7/(2/3) = 7(3/2) = 21/2

6/5 x = -7/11 ⇒ x (-7/11)/(6/5) = (-7/11)×(5/6) = -35/66

-7x = -4/3 ⇒ x = (4/3)/7 = 4/21

-3/2 x = 5 ⇒ x = 5/(-3/2) = 5 × (-2/3) = -10/3

-5/7 x = -2/3 ⇒ x = (2/3)/(5/7) = 2/3 × 7/5 = 14/15

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