Question

{1/3+[5-(1/5+1/4)-(3- 2 1/2)]}+(4 1/2-3)

Answer 1

{1/3+[5-(1/4+1/5)-(3- 2 1/2)]}+(4 1/2-3)
{1/3+[5-(5/20+4/20)- 1 1/2]}+ 1 1/2
{1/3 + [5- 9/20- 1 1/2]} + 1 1/2
{1/3 + [ 10/2 -9/20-3/2]}+ 1 1/2
{1/3 + [300/60- 27/60- 20/60]}+ 1 1/2
{1/3 + 193/60 }+1 1/2
{20/60 +193/60}+ 1 1/2
213/60 + 3/2
213/60 + 90/60
303/60

dividindo 303 por 60 vai dar 5,05..

espero q esse seja o resultado q procura. bjus