Question

Pfv respostas


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Answer 1

Resposta:

Soma e subtração

a)

$\frac{1}{3} + \frac{2}{6} - \frac{5}{18} - \frac{7}{9} = \frac{6 + 6 - 5 - 14}{10} = \frac{ - 7}{18}$

b)

$\frac{2}{3} - \frac{4}{9} + \frac{10}{6} - \frac{8}{18} = \frac{12 - 8 + 30 - 8}{18} = \frac{26}{18}$

c)

$\frac{6}{5} - \frac{3}{8} + \frac{4}{9} - \frac{13}{3} = \frac{432 - 135 + 160 - 1560}{360} = \frac{ - 1103}{360}$

d)

$\frac{14}{8} - \frac{36}{7} + \frac{42}{4} - \frac{2}{14} = \frac{98 - 1764 + 588 - 8}{56} = \frac{1086}{56}$

e)

$\frac{3}{9} + \frac{21}{4} - \frac{8}{6} + \frac{3}{8} = \frac{24 + 378 - 96 + 27}{72} = \frac{333}{72}$