Question

multiplicacion y division en Q.
AYUDAAAA​

Answer 1

Respuesta:

a) $\frac{3}{10}$

b) $\frac{1}{28}$

c) $-\frac{15}{2}$

d) $\frac{12}{35}$

e) $\frac{21}{10}$

Explicación paso a paso:

a) $(\frac{3}{4}) * (\frac{2}{5}) = \frac{3 * 2}{4 * 5} = \frac{6}{20} = \frac{3}{10}$

b) $(-\frac{1}{4}) * (\frac{3}{7}) * (-\frac{1}{3}) = \frac{(-1)*3*(-1)}{(-4)*7*(-3)} = \frac{3}{84} = \frac{1}{28}$

c) $(\frac{8}{12}) *(-3\frac{3}{4}) *(-5) = (\frac{8}{12}) * (-\frac{9}{4}) *(-5) = \frac{8*(-9)*(-5)}{12*(-4)} = \frac{360}{-48} = -\frac{15}{2}$

d) $\frac{3}{10} : \frac{7}{8} = \frac{3*8}{10*7} = \frac{24}{70} = \frac{12}{35}$

e) $3\frac{7}{8} :\frac{5}{4} = \frac{21}{8} :\frac{5}{4} = \frac{21*4}{8*5} = \frac{84}{40} =\frac{21}{10}$