Question

simplificando a expressão obtemos o número: a)-6/7. b)-7/6. c)6/7. d)7/6. e)-5/7​

Answer 1

$\frac{3 \times ( - { \frac{1}{2} )}^{2} + \frac{1}{4} }{3 \times ( - { \frac{1}{2} ) }^{2} - \frac{3}{2} } = \frac{3 \times \frac{1}{4} + \frac{1}{4} }{3 \times \frac{1}{9} - \frac{3}{2} } = \frac{ \frac{3}{4} + \frac{1}{4} }{ \frac{3}{9} - \frac{3}{2} } \\ \frac{ \frac{4}{4} }{ - \frac{21}{18} } = 1 \times - \frac{7}{6} = - \frac{6}{7}$

alternativa a)-6/7