Rezultatul calculului ... va rog ... urgent ...

a) (17/5):[(5/3)-(3/5)]-2=(17/5)*(15/16)-2=(51/16)-2=19/16;
b) 15/4;
c)(21-2)/90=19/90;
b) 70/23;
c) 2+4+5+10=21;
a) 31+37+41=109;
c) 2,1*3=6,3;
b) 8 000 000 m^2

3 intregi 2 supra5:(1 intreg2 supra 3-3 supra 5)-2=

17/5:(5/2-3/5)-2/1=

17/5:(5/2 amplificat cu 5 - 3/5 amplificat cu 2)-2/1=

17/5:(25/10-6/10)-2/1=

17/5:19/10-2/1

17/5*10/19(se simplifica 10 cu 5)-2/1

34/19-2/1=

amplifici pe 2/1 cu 19

34/19-38/19=-4/19

17/5:19/10