Bonsoir
[tex]8 \times \frac{3 \times 1}{4 \times 5} \\ = 8 \times \frac{3}{20} \\ = \frac{24}{20} \\= \frac{12}{10} \\ = \frac{6}{5} [/tex]
[tex]2 + \frac{3 \times 4 - 1}{2} \times 6 \\ = 2 + \frac{12 - 1}{2} \times 6 \\ = 2 + \frac{11}{2} \times 6 \\ = 2 + \frac{66}{2} \\ = \frac{4}{2} + \frac{66}{2} \\ = \frac{70}{2} \\ = 35[/tex]
bonne soirée