☺ Salut ☺
[tex]\rule{6cm}{1mm}[/tex]
Effectuons les calculs suivants :
[tex]A = \dfrac{1}{5} \times \dfrac{- 4}{3} + \dfrac{7}{2}[/tex]
[tex]A = - \dfrac{4}{15}+ \dfrac{7}{2}[/tex]
[tex]A = \dfrac{- 8 + 105}{30}[/tex]
[tex]\green{A = \dfrac{87}{30}}[/tex]
[tex]\\[/tex]
[tex]B = \dfrac{13}{7} (- \dfrac{8}{7}) \div (- \dfrac{4}{5}[/tex]
[tex]B = \dfrac{13}{7} + \dfrac{8}{7}\times \dfrac{5}{4}[/tex]
[tex]B = \dfrac{13}{7} + \dfrac{40}{28}[/tex]
[tex]B = \dfrac{13}{7} + \dfrac{10}{7}[/tex]
[tex]B = \dfrac{13 + 10}{7}[/tex]
[tex]\green{B = \dfrac{23}{7}}[/tex]
[tex]\\[/tex]
[tex]C = ( \dfrac{3}{2} + \dfrac{3}{5} ) ( \dfrac{5}{4} - \dfrac{4}{3} )[/tex]
[tex]C = ( \dfrac{15 + 6}{10}) ( \dfrac{15 - 16}{12})[/tex]
[tex]C = ( \dfrac{21}{10}) (- \dfrac{1}{12})[/tex]
[tex]C = - \dfrac{21}{120}[/tex]
[tex]\green{C = - \dfrac{7}{40}}[/tex]
[tex]\\[/tex]
[tex]D = - \dfrac{3}{8} - \dfrac{5}{8} \times \dfrac{7}{9}[/tex]
[tex]D = - \dfrac{3}{8} - \dfrac{35}{72}[/tex]
[tex]D = \dfrac{- 27 - 35}{72} [/tex]
[tex]D = \dfrac{- 62}{72} [/tex]
[tex]\green{D = - \dfrac{ 31}{36} }[/tex]
[tex]\rule{6cm}{1mm}[/tex]
