Question

Calcule por favor responda as três ai :(

Answer 1

Resposta:

$\frac{27}{36}$

b$=\frac{5}{9}$

c $=\frac{2}{7}$

Explicação passo-a-passo:

$\frac{3}{4} -\frac{1}{9} \\MMC de 4 e 9 e 36\\\frac{27}{36} -\frac{4}{36} \\=\frac{23}{36}$

b

$\frac{8}{9} -\frac{1}{9} -\frac{2}{9} =\frac{5}{9}$

c$\frac{12}{42} =\frac{2}{7} \\\\prova real =\frac{2}{7} * \frac{6}{6} = \frac{12}{42}$