Question

calcule as frações:

$\frac{ 5}{7} + \frac{2}{3} =$
$\frac{6}{5} - \frac{3}{2} =$
$\frac{4}{3} \times \frac{6}{5} =$
$\frac{2}{8} \div \frac{8}{5} =$
​

Answer 1

A) 5/7 + 2/3

= 15/21 + 14/21

$= \: \frac{15 + 14}{21}$

= 29/21

B)6/5 - 3/2

$= \: \frac{6}{5} \: \: + \: \frac{ - 3}{2}$

$= \: \frac{12}{10} \: \: + \: \frac{ - 15}{10}$

$= \: \frac{12 \: \:+ \: - 15 }{10}$

$= \frac{ - 3}{10}$

C)4/3 × 6/5

$= \: \frac{8}{5}$

D)2/8 ÷ 8/5

$= \: \frac{1}{4} \\ \: \: \: \: \: \: \: \frac{8}{5}$

$= \frac{1}{32} \\ \: \: \: \: \: \: 5$

$= \frac{1}{160}$

Answer 2

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Explicação passo-a-passo:

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