Question

calcule o valor das expressoes 
A-2/5 + 1/2 -1/3
B-3/4 .5/6 +1/2
C-2/3+1/4 .3
D- 3/4:1/2-2/3
E-3/5 + 1/5 : 1/10
F-21/2 + 3/2 .1/2

Answer 1

2/5+1/2-1/3=-1,0
3/4.5/6+1/2=0,81
2/3+1/4.3=1,25
3/4:1/2-2/3=-0,54
3/5+1/5:1/10=0,032
21/2+3/2.1/2=3,375