Question

resolva a expressão:
[1-(½-⅖)] : [(⅕+½)²-(-⅔)¹]=
a)70/199
b)80/199
c)90/199
d)100/199
e)110/199

urgente pff

Answer 1

Resposta:

$[1-(\frac{1}{2}-\frac{2}{5} )]:[(\frac{1}{5}+\frac{1}{2} )^{2}-(-\frac{2}{3} )^{1} ]$

$[1-(\frac{5.1-2.2}{2.5}) ]:[(\frac{2.1+5.1}{5.2} )^{2} -(-\frac{2}{3} ]$

$[1-(\frac{5-4}{10} )]:[(\frac{2+5}{10} )^{2}+\frac{2}{3} ]$

$[1-(\frac{1}{10} )]:[(\frac{7}{10} )^{2}+\frac{2}{3} ]$

$[1-\frac{1}{10}]:[\frac{49}{100}+\frac{2}{3}]$

$[\frac{1.10-1.1}{10} ]:[\frac{3.49+2.100}{3.100}]$

$[\frac{10-1}{10} ]:[\frac{147+200}{300}]$

$[\frac{9}{10} ]:[\frac{347}{300}]$

$\frac{9}{10}:\frac{347}{300}$

$\frac{9}{10}.\frac{300}{347}$

$\frac{2700}{3470}$

$\frac{2700:10}{3470:10}$

$\frac{270}{347}$