Question

De três frações equivalentes usando a
multiplicação
a 1/4
2/3
4/8
2/5
1/7
1/2

Answer 1

$a \\ \\ ) \dfrac{1}{4} \\ \\ \\ \dfrac{1}{4} \ \dfrac{*}{*} \ \dfrac{2}{2} = \dfrac{2}{8} \\ \\ \\ \dfrac{1}{4} \ \dfrac{*}{*} \ \dfrac{3}{3} = \dfrac{3}{12} \\ \\ \\ \dfrac{1}{4} \ \dfrac{*}{*} \ \dfrac{4}{4} = \dfrac{4}{16}$

====
$\dfrac{2}{3} \\ \\ \\ \dfrac{2}{3} \ \dfrac{*}{*} \ \dfrac{2}{2} = \dfrac{4}{6} \\ \\ \\ \dfrac{2}{3} \ \dfrac{*}{*} \ \dfrac{3}{3} = \dfrac{6}{9} \\ \\ \\ \dfrac{2}{3} \ \dfrac{*}{*} \ \dfrac{4}{4} = \dfrac{8}{12}$

====
$\dfrac{4}{8} \\ \\ \\ \dfrac{4}{8} \ \dfrac{*}{*} \ \dfrac{2}{2} = \dfrac{8}{16} \\ \\ \\ \dfrac{4}{8} \ \dfrac{*}{*} \ \dfrac{3}{3} = \dfrac{12}{24} \\ \\ \\ \dfrac{4}{8} \ \dfrac{*}{*} \ \dfrac{4}{4} = \dfrac{16}{32}$

====
$\dfrac{2}{5} \\ \\ \\ \dfrac{2}{5} \ \dfrac{*}{*} \ \dfrac{2}{2} = \dfrac{4}{10} \\ \\ \\ \dfrac{2}{5} \ \dfrac{*}{*} \ \dfrac{3}{3} = \dfrac{6}{15} \\ \\ \\ \dfrac{2}{5} \ \dfrac{*}{*} \ \dfrac{4}{4} = \dfrac{8}{20}$

====
$\dfrac{1}{7} \\ \\ \\ \dfrac{1}{7} \ \dfrac{*}{*} \ \dfrac{2}{2} = \dfrac{2}{14} \\ \\ \\ \dfrac{1}{7} \ \dfrac{*}{*} \ \dfrac{3}{3} = \dfrac{3}{21} \\ \\ \\ \dfrac{1}{7} \ \dfrac{*}{*} \ \dfrac{4}{4} = \dfrac{4}{28}$

====
$\dfrac{1}{2} \\ \\ \\ \dfrac{1}{2} \ \dfrac{*}{*} \ \dfrac{2}{2} = \dfrac{2}{4} \\ \\ \\ \dfrac{1}{2} \ \dfrac{*}{*} \ \dfrac{3}{3} = \dfrac{3}{6} \\ \\ \\ \dfrac{1}{2} \ \dfrac{*}{*} \ \dfrac{4}{4} = \dfrac{4}{8}$