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Sagot :

SKABETIX

Bonjour,

    n + n + 1 + n + 2 + n + 3 + 90

⇔ 4n + 6 = 90

⇔ 4n = 90 - 6

⇔ 4n = 84

⇔ n = 84/4

⇔ n = 21

donc 21, 22 , 23 et 24

Bonjour,

x+1

x+2

x+3

x+4

x+1+x+2 +x+3+x+4 =90

4x+ 10 =90

4x = 90 -10

4x= 80

x= 80/4

x= 20

21,22,23,24

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