desfaceti parantezele si efectuati operatiile: a) (-3intregi 5/8+7,6)-(10,8-8intregi 3/4) b)-(5intregi 4/9-6intregi 5/12)+(-3intregi 2/3-5/9) c) (4,8-5intregi 3/14)-(-4intregi 3/35+4intregi 8/35) d)(1intreg-1/2)-1/3-1/2)-(1/4-1/3)-(1/5-1/4) va rog mult
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
