Question

Expressões: a) 1 + (1/2 - 1/5 ) - ( 7/4 - 5/4 )= b) (1/3 + 1/4 ) + ( 2 - 1/2 + 1/6)=
c) 7/6 - [ 3/2 - ( 1 - 1/3 ) + ( 1 - 3/4 )]= d) [( 1/20+01/3 ) +1/4 - ( 1 - 5/8 ) ] + 2/3 =

Answer 1

a) 1+(5/10 - 2/10) - (2/4) =
     1/1 + 3/10 - 2/4 =
     20/20 + 6/20 - 10/20 =
     16/20+
     4/5