Salut! ♡
[tex] - 1,2 \times ( - 7 \frac{9}{13} ) - ( - 1,2) \times 2 \frac{4}{13} = [/tex]
[tex] - \frac{6}{5} \times ( - \frac{100}{13} ) + 1,2 \times 2 \times \frac{4}{13} [/tex]
[tex]6 \times \frac{20}{13} + \frac{6}{5} \times 2 \times \frac{4}{13} [/tex]
[tex] \frac{120}{13} \times \frac{48}{65} = \frac{648}{65} [/tex]