Réponses

2013-05-20T15:04:25+02:00

1.

A = 5 - ( x - 3 )

A = 5 - x + 3

A = 8 - x

 

2.

a)

Si x = 20,

Alors, 

A = 5 - ( 20 - 3 )

A = 5 - 17

A = - 12

 

b)

A = 8 - 20

A = - 12