Question

Efetue:

7/3 + 4/9 =

9/2 + 7/4 =

13/5 - 3/10 =

17/5 - 7/4 =

Answer 1

7/3-= 2,3 
7/4=1,75 
 1,75+2,3 =4,03

9/2=4,5 
7/4=1,75
1,75+4,5=6,25

13/5=2,6
3/10=0,3 
0,3-2,6=2,3

17/5=3,4
7/4=1,75
1,75-3,4=-1,65