Question

determine as somas algébricas a seguir:
a) -7/8 + 5/4 - 1/2 + 5 =
b) - (-7/10) - (+3/5) - 1/8 + (-0,75) =

Answer 1

a)-7/4 + 5/4 tira o mmc fica= -7/4 +10/4 = +3/4 - 1/2 +5/1 tira mmc fica + 3/4 -1/4 +20/4= +22/4 simplifica +11/4 

b)