Question

(-2/3)²+2/7:-4/7-3*(7/5)+5/4

Answer 1

Bom dia

$(- \frac{2}{3} )^{2} + \frac{2}{7}\div (- \frac{4}{7} )-3* \frac{7}{5} + \frac{5}{4} \\ \\ \frac{4}{9} + \frac{2}{7}\div (- \frac{4}{7} )-3* \frac{7}{5} + \frac{5}{4} \\ \\ \frac{4}{9} + \frac{2}{7}\times (- \frac{7}{4} )- \frac{21}{5} + \frac{5}{4} \\ \\ \frac{4}{9} - \frac{1}{2}- \frac{21}{5} + \frac{5}{4} \\ \\ \frac{80-90-756+225}{180} = \frac{-541}{180}$