$$\color{rgb(0,127,0)}\overrightarrow {AM}=3 \overrightarrow {AB}+1.97\overrightarrow {AC}$$

$$\color{rgb(255,0,0)}\begin{array}{l} {M\left( 3 ;2 \right) \text{ dans le}} \\ {\text{rep}\grave{e} \text{re }\left( A;\overrightarrow {AB},\overrightarrow {AC } \right) } \end{array}$$

$$\color{rgb(127,0,127)}2 \overrightarrow {AC}$$

$$\color{rgb(0,0,255)}3 \overrightarrow {AB}$$