Question

eu presiju de ajudo​

Answer 1

Resposta:

Explicação passo-a-passo:

A)

$\frac{\frac{21}{14}}{\frac{7}{2}}-\frac{11}{14}\\\frac{21^{:7}}{14^{:2}}*\frac{2^{:2}}{7^{:7}}-\frac{11}{14}\\\frac{3}{7}*\frac{1}{1}-\frac{11}{14}=\frac{3}{7}-\frac{11}{14}=\frac{6-11}{14}=\frac{-5}{14}$

B)

$\frac{\frac{5}{3}-\frac{2}{9}}{\frac{17}{54}-\frac{4}{54}}$

$\frac{\frac{15-2}{9}}{\frac{17-4}{54}}\\\\\frac{\frac{13}{9}}{\frac{13}{54}}\\\frac{13^{:13}}{9}*\frac{54}{13^{:13}}=\frac{54}{9}=6$