Question

Calcule e simplifique se possível:

a) 6/15 : 3/5 =

b) 14/10 x 2/9 = ​

Answer 1

Resposta:

$\frac{6}{15}\div \frac{3}{5}\\\\\mathrm{Aplicar\:as\:propriedades\:das\:fracoes}:\quad \frac{a}{b}\div \frac{c}{d}=\frac{a}{b}\times \frac{d}{c}\\\\\frac{6}{15}\times \frac{5}{3}\\\\\frac{2}{5}\times \frac{5}{3}\\\\\mathrm{Faca\:o\:cancelamento\:cruzado:}\:5\\\\\frac{2}{3}$

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$\frac{14}{10}\cdot \frac{2}{9}\\\\\frac{2\cdot \:7}{10}\cdot \frac{2}{9}\\\\\frac{2\cdot \:7}{2\cdot \:5}\cdot \frac{2}{9}\\\\\frac{7}{5}\cdot \frac{2}{9}\\\\\frac{7\cdot \:2}{5\cdot \:9}\\\\\frac{14}{5\cdot \:9}\\\\\frac{14}{45}$

Answer 2

Explicação passo-a-passo:

a) 6/15 : 3/5 =

6/15 • 5/3 =

30/45

simplificado:

30/45 : 5

6/9

b) 14/10 • 2/9

28/90

simplificado:

28/90 : 2

45/14