Question

Gente me ajudem
[ -3/5 + ( 1/2 -1/4) ] - [ 3/10 + (-3/4 - 11/20)]= ?

Answer 1

[ -3/5 + ( 1/2 -1/4) ] - [ 3/10 + (-3/4 - 11/20)]

[ -3/5 + 1/4 ] - [ 3/10 - 26/20]
[ -7/20 ] - [ -20/20]
-7/20+20/20
13/20


Forte abraço!