Odpowiedzi

2010-04-14T15:04:30+02:00
4/5+( 1 1/5 * 5/12 + 8/10) /(½)³=4/5 + (6/5 * 5/12 + 8/10) / 1-8= 4/5 + (3/4 + 8/10) / 1/8 = 4/5 + (15/20 + 16/ 20) / 1/8= 4/5 + 31/20 / 1/8 = 16/20 + 31/ 20 / 1/8 = 47 / 20 / 1/8 = 47/20 * 8/1 = 94/5 = 18 4/5

2/3- ( 4/5 - 8/10* 3/8) / ¾= 2/3 - (-4/5 + 3/10) / 3/4 + 2/3 - ( - 8/10 + 3/10) / 3/4 = 2/3 -5/10 / 3/4 = 20/30 - 15/ 30 / 3/4 = 5/ 30 / 3/4 = 5/30 : 3/4 = 5/40 = 1/8
2010-04-14T15:09:33+02:00
1)
4/5+(11/5*5/12+8/10):(1/2)³=
=4/5+11/1*1/12+8/10):(1/2)³=
=4/5+(11/12+8/10):1/8=
=4/5+(55/60+48/60):1/8=
=4/5+103:1/8=
=2/5+103/60*8/1=
=824/60+4/5=824/60+48/60=
=872/60=
14 32/60

2)
2/3-(4/5-8/10*3/8):3/4=
=2/3-(4/5-1/10*3/1):3/4=
=2/3-(4/5-3/10):3/4=
=2/3-5/10:3/4=
=2/3-5/10*4/3=
=2/3-20/30=
=20/30-20/30=
0