3intregi5/8=(3x8+5)/5=29/8 asa se calculeaza
7,6=76/10
a) (29/8-76/10)-(108/10-35/4)=
29/8-76/10-108/10+35/4=
29/8-184/10+35/4=aducem la acelasi numitor care0,4]= se calculeaza astfel:
8=2³
10=2x5
4=2² calculam cel mai mic multiplu comun
[8,10,4]=2³x5=40 deci 40 este numitorul comun
40:8=5 deci cu 5 amplificam prima fractie
40:10=4 deci cu 4 amplificam a II fractie
40:4=10 amplificam cu 10 a III fractie
deci ex.devine:(29x5-184x4+35x10)/40=
(145-736+350)/40=(-591+350)/40=-241/40=-6,025
