bonjour
( 4 + x ) / ( 5 + x ) = 2/3
12 + 3 x = 10 + 2 x
3 x - 2 x = 10 - 12
x = - 2
(4 - 2 ) / ( 5 - 2 ) = 2 /3
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bonjour
( 4 + x ) / ( 5 + x ) = 2/3
12 + 3 x = 10 + 2 x
3 x - 2 x = 10 - 12
x = - 2
(4 - 2 ) / ( 5 - 2 ) = 2 /3