Question

efetue as adições

(+ 2) + (-1) :
5 ( 3)

Answer 1

a) 2/5-1/3
6-5/15
1/15

b) -2/3-5/6
-4-5/6
-9/6
-3/2

c) 3/5-1/3-2/5
9-5-6/15
20/15
4/3

d) 0,1+0,11-1,1
0,21-1,1
-0,89