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bonsoir

3 x = 9

x = 3

x /15 = 2

x = 30

9 x =13

x = 13/9

x /7 = 3

x = 21

x /6 = 1.5

x = 9

10 x /3 = 5

10 x = 15

x = 1.5

Bonjour,
A) 3x = 9
x = 9/3
x = 3

B) x + 15 = 2
x = 2-15
x = -13

C) 9x = 13
x = 13/9
x = 1,4444…

D) x/7 = 3
x = 3*7
x = 21

E) x+6 = 1,5
x = 1,5-6
x = -4,5

F) (10/3)x = 5
x = 5*(10/3)
x = 16,6667

J’espère que cela va t’aider

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