Question

Ache a fração irredutível equivalente a cada fração abaixo:
A) 2/4 b) 10/100 c) 14/4 d) 24/36 e) 10/35 f) 21/28 g) 30/45 h) 12/48

Answer 1

a)
$\frac{2}{4} = \frac{2:2}{4:2} = \frac{1}{2}$

b)
$\frac{10}{100} = \frac{10:10}{100:10} = \frac{1}{10}$

pode cancelar o zero, também

c)
$\frac{14}{4} = \frac{14:2}{4:2} = \frac{7}{2}$

d)
$\frac{24}{36} = \frac{24:12}{36:12} = \frac{2}{3}$

e)
$\frac{10}{35} = \frac{10:5}{35:5} = \frac{2}{7}$

f)
$\frac{21}{28} = \frac{21:7}{28:7} = \frac{3}{4}$

g)
$\frac{30}{45} = \frac{30:15}{45:15} = \frac{2}{3}$

h)
$\frac{12}{48} = \frac{12:12}{48:12} = \frac{1}{4}$

Answer 2

$a) \\ \\ \dfrac{2}{4} \ \dfrac{\div}{\div} \ \dfrac{2}{2} \ => \dfrac{1}{2}$

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$b) \\ \\ \dfrac{10}{100} \ \dfrac{\div}{\div} \ \dfrac{10}{10} \ => \dfrac{1}{10}$

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$c) \\ \\ \dfrac{14}{4} \ \dfrac{\div}{\div} \ \dfrac{2}{2} \ => \dfrac{7}{2}$

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$d) \\ \\ \dfrac{24}{36} \ \dfrac{\div}{\div} \ \dfrac{12}{12} \ => \dfrac{2}{3}$

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$e) \\ \\ \dfrac{10}{35} \ \dfrac{\div}{\div} \ \dfrac{5}{5} \ => \dfrac{2}{7}$

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$f) \\ \\ \dfrac{21}{28} \ \dfrac{\div}{\div} \ \dfrac{7}{7} \ => \dfrac{3}{4}$

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$g) \\ \\ \dfrac{30}{45} \ \dfrac{\div}{\div} \ \dfrac{15}{15} \ => \dfrac{2}{3}$

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$h) \\ \\ \dfrac{12}{48} \ \dfrac{\div}{\div} \ \dfrac{12}{12} \ => \dfrac{1}{4}$