Question

Por favor me ajudem preciso agora!!!​

Answer 1

$\frac{( - 3)^{2} + ( \frac{7}{8})^{ - 2} - ( - \frac{1}{16})^{0} }{ \frac{3}{ (\frac{1}{3}) ^{ - 2} } + 4} \\\\ \frac{9 + (\frac{8}{7} )^{2} - 1}{ \frac{3}{3^{2} } + 4 } \\\\ \frac{8 + \frac{64}{49} }{ \frac{3}{9} + 4 } \\\\ \frac{ \frac{392}{49} + \frac{64}{49} }{ \frac{1}{3} + \frac{12}{3} } \\\\ \frac{ \frac{456}{49} }{ \frac{13}{3} } \\\\ \frac{456 \times 3}{49 \times 13} \\\\ \frac{1368}{637}$

Answer 2

a)

[+9+(8/7)²-1]/(3/9+4)=

[9+64/49-1]/(39/9)=

[505/49-1]/(39/9)=

[456/49]/(39/9)=

456/49*9/39=

4104/1911=