Question

me ajudem pfvr urgente​

Answer 1

Explicação passo-a-passo:

A)

$\dfrac{13}{9} - \dfrac{4}{6}$

$mmc = 18$

$\dfrac{26 - 12}{18}$

$\dfrac{14}{18}$

$\dfrac{14 {}^{ \div 2} }{18 {}^{ \div 2} }$

7/9

B)

$\dfrac{11}{4} - \dfrac{3}{5}$

$mmc = 20$

$\dfrac{55 - 12}{20}$

43/20