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Sagot :

VINS

Réponse :

bonjour

[tex]29 e - 27 s + 4 e - 5 s = 33 e - 32 s \\\\- 10 e + ( - 9 s) - 5 e + 10 s = - 10 e - 9 s - 5 e + 10 s = - 15 e + s \\\\14 e + 7 s - ( 2 e) - 8 s = 14 e + 7 s - 2 e - 8 s = 12 e - s \\\\[/tex]

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