Question

calcule e simpifique as resposta sempre que possível
a)2-1/9+1/3=
b)5-8/4:2/3+1/2=
c)4/5-1/4×5=
d)1/4.4/3:5/3.2/4=

*responder todas*
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Answer 1

a).

$2 - \frac{1}{9} + \frac{1}{3} \\ \\ = \frac{18}{9} - \frac{1}{9} + \frac{3}{9} \\ \\ = \frac{20}{9}$

c).

$\frac{4}{5} - \frac{1}{4} \times 5 \\ \\ = \frac{4}{5} - \frac{5}{4} \\ \\ = \frac{16}{20} - \frac{25}{20} \\ \\ = - \frac{9}{20}$