Question

Calcule: a) 1/3 + 2/5= b)7/2 + 2/3= c)2 + 1/4= d)1/5 + 3/5= e)5/3 + 4/5 + 7/15= f)4 - 1/7= g)9/10 - 4/5=

Answer 1

a) 1/3 + 2/5=0.733...

b)7/2 + 2/3=4.1666...

c)2 + 1/4= 2.25

d)1/5 + 3/5= 0.8

e)5/3 + 4/5 + 7/15=2.9333...

f)4 - 1/7=3.85714285714

g)9/10 - 4/5=0.1

EXPLICAÇÃO:

(1/3)+(2/5)=

1÷3= 0.333...

2÷5=0.4

0.333...+0.4=0.733...

e assim por diante