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Sagot :

VINS

Réponse :

bonsoir

x/2 = 4/5

5 x = 8

x = 8/5

( 2 x + 1) / 2 = x /5

( 10 x + 5 ) /10 = 2 x /10

10 x + 5 = 2 x

10 x - 2 x = - 5

8 x = - 5

x = - 5/8

( x + 5) / 2 + 1 = ( x - 2 ) /4

( 2 x + 10)/4 + 4/4 = ( x - 2 ) / 4

2 x + 10 + 4 = x - 2

2 x - x = - 2 - 14

x = - 16

Explications étape par étape :

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