Odpowiedzi

2010-01-26T22:16:16+01:00
.2.tzn do potegi drugiej.; D
1.
50-1/2*8 2/4+2.2.=50-0,5*8+2.2.=50-4,25+4=45,75+4=49,75
2.
(3/4-1/5):1/2=(15/20-4/20):1/2=11/20:1/2=11/20*2/1=11/10=1 1/10
3.
4,8+1/3*(1,2-0,6)=4,8+1/3*0,6=4,8+1/3*6/10=4,8+3/10=4,8+0,3=5,1
4.
1/2*3/4-0,5*0,75=5,10*7/100-0,5*0,75=0,5*0,75-0,5*0,75=0,375-,375=0
5.
22-(5+6)=22-11=11
6.
1+3/7:1/7=1+3/7*1/7=1+3=4
7.
(0,6+0,9):3=1,5:3=0,5
8.
2*(20+14:2)=2*27=54