[tex]a) \\ \frac{x + 4}{9} = \frac{7}{9 } \\ x + 4 = 7 \\ x = 3[/tex]
[tex] c)\\ \frac{x + 5}{7} = \frac{11}{7} \\ x + 5 = 11 \\ x = 6[/tex]
[tex]d) \\ \frac{13}{5} - x = \frac{3}{5} \\ x = \frac{13}{5} - \frac{3}{5} = \frac{10}{5} = 2[/tex]
[tex]b) \\ \frac{x - 5}{9} = \frac{7}{9} \\ x - 5 = 7 \\ x = 12 [/tex]
