Question

Resolva As expressões:
a) ( 5/3 ) - ( +1/4 ) + ( + 2/7 ) =
b) ( -3/4 ) - ( -1/3 ) + ( -2/5 ) =
c) ( -3/5 ) - ( -2/3 ) + ( -1/2 ) =
d) 2x ( 3/5 + 1/7 ) =
e) 3/5× ( 2/5 + 1/2 ) =
f) 1/2× ( 2/3 - 1/6 ) =
g) 3/7× ( 1/4 - 1/6 ) =
h) -7× ( 1/14 - 3/15 ) =

Me ajudem pfv.

Answer 1

Aí esta
Espero ter ajudado