a) 3/4+1/4:2/3=
1/4:2/3= 3/8
3/4+3/8= 1 1/8
b) 1/3:3+5:1/5=
1/3:3= 1/9
5:1/5= 25/1= 25
1/9+25= 25 1/9
c) (3 1/3-5/6)*4/15=
3 1/3-5/6=2 1/2
2 1/2*4/15=2/3
d) (1 1/8-1/2)*(3/5+1/3)=
1 1/8-1/2=5/8
3/5+1/3=14/15
5/8*14/15=7/12
e) 1 1/5*1 1/3*1/7+(1 1/7)^2=
(1 1/7)^2=1/3
1 1/5*1 1/3=1 3/5*1/7=8/35
8/35+1/3=59/105
f) (2 1/6-2/3)^2-2 1/5=
2 1/5-2/3=1 8/15^2=2 79/225
2 79/225-2 1/5= 1 34/225
g) 10-2*(3 1/5-2 1/4*1/3)=
1/4*1/3=1/12
3 1/5-1/12=3 7/60
2*3 7/60=6 7/30
10-6 7/30=3 23/30
h) (7/5-5/12+1 1/2):(2 3/4-5/6)=
7/5-5/12=59/60+1 1/2=2 29/60
2 3/4-5/6=1 11/12
2 29/60:1 11/12=1 34/115
Pozdrawiam:3
