Question

Ajuda por favor - imagens abaixo

Answer 1

$1-\boxed{\frac{-1}{4} }\\\\ 2-\boxed{\frac{2}{5}} \\\\3-\boxed{\frac{-6}{25}}\\\\4-\boxed{\frac{1}{4}}\\\\6- \boxed{-\frac{21}{16}}\\\\\\7-\boxed{\frac{7}{3}} \\\\ \\8-  \boxed{-\frac{1}{2}}\\ 9-\boxed{-\frac{7}{4}}\\10-\boxed{-\frac{1}{2}}$