a) 1/3*6+4/3*21/28+7/2*38/5=
2+1+133/5=
aducem la acelasi numitor 5
10+5+133/5=148/5
b) (65/195+108/324+122/366)*(24/168-6/42)=
(1284660+1284660+1284660/3853980)*(24-24/168)=
1*0=0
c) (13/4+9/7-45/28)*56/41=
(91+36-45/28)*56/41=
82/28*56/41=4
d) 270/63*(16/5+106/15-7/3)=
270/63*(48+106-35/15)=
270/63*119/15=