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Sagot :

TENURF

bjr,

[tex]\overrightarrow{MR} = \overrightarrow{MT} +\overrightarrow{TR} \\\\\overrightarrow{MS} = \overrightarrow{MT} +\overrightarrow{TS} \\\\\text{Donc} \\\\\overrightarrow{MR}+2\overrightarrow{MS}-3\overrightarrow{MT}\\\\=\overrightarrow{MT} +\overrightarrow{TR} + 2\overrightarrow{MT} +2\overrightarrow{TS}-3\overrightarrow{MT}\\ \\=\overrightarrow{TR}+2\overrightarrow{TS}[/tex]

Merci

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